The reason that people understand to go lighter is the shoes. I ran into two girls last fall who were chugging along at a reasonable pace, but I passed them when one stopped to take off her boot and readjust the boots, a process I remember well, and with no fondness. I stopped to talk to them, noted that I was wearing low topped hikers with a low weight pack. They found UL backpackers somewhat ridiculous, though I will always regret not having asked them exactly why, but they did get the thing about shoes. Running shoes will be even more convincing, but it's my feeling that the tread on running shoes is not as safe for new backpackers as it is on more chunky low top hiking shoes. They may also have noticed that I was 30 years older than them but still was passing them, I don't know.
I'd say, if you want to turn off a new backpacker if they are sort of average types, by all means introduce them to UL gear on their first trip, not all, mind you, there will be some who really like it and respond to it, but many or most will see the gear as flimsy and delicate and a pain to use, which is fairly accurate if you're objective.
Light gear, on the other hand, is a different story, Craig Wisner gives a good sample list, but you don't have to go so low in weight, I was just at an outdoor store, you can get roughly 3, 3.5 lb. packs that are decent, small, 35 liters, with frames, padding, everything, and pretty much like a normal backpack. And very cheap right now on closeouts. Deuter had some especially nice looking ones.
The thing with a regular backpack is it's pretty durable, it's easy to use, you just toss stuff in it and it's right.
A 3 pound or so tent is going to be more durable and less delicate than one of the really light tents, and it will probably correspond roughly to what they expect. A rainbow is not bad but I think it depends where you camp with tarptent type tents, if it's just summer stuff, who really cares, but if it's going to hit rain or wind, most people are going to be a lot happier in a two walled tent.
If I wanted someone who either has never camped before or who is doing it again after years, to have a good time and want to return, I'd lend them a fullsized old thermarest, sleep is number one, and ccf is not comfortable for most people. Then I'd point them to the various foam core air mattress options, explaining the differences re weight and shape to them.
If the person is going alone or with a friend, they need a water filter, and that's the sawyer squeeze, easiest to use, most convenient, a slam dunk for gear, the only gear item I would consider best for any weight category in my entire light gear set. Costs the same roughly as any other option, which makes it even easier.
If they are cooking for themselves, I'd recommend a gas stove, they are just too easy, and as someone noted above, you can get the stove part for some $12 right now. Everyone understands how to use a gas stove. Alcohol is too picky, wind, windscreens, and the cat stove is too unstable, if alcohol, I'd show them a stove with a stove stand, but I think alcohol is a bit touchy compared to gas for a new camper. Maybe show them your stuff if you go with them, or show it to them in the yard, if you have one, and look at their reactions. If you show them a simple, non priming alcohol stove and they seem to like it and understand the point of rehydrating food (remember, you can cook easily with gas, not so much with alcohol), simmering vs rehydrating, etc.
If you add in all the real stuff you're going to bring, you might be able to hit a 15 pound base weight, not sure, very easily, but anything under 20 pounds is totally fine for a weekend 1 or 2 night trip. It's the difference between 50, 40, 35, 30 pounds, not 25 20 15, that matters, unless the person is just horribly out of shape, then you have some risk issues like ankle or knee sprains due to stumbling, which is helped very much by trekking poles or a hiking stick, but I think poles are better.
Extra socks, some blister moleskin stuff, a small knife, with scissors, water bottles, at least, you'll find the weight really isn't going to be anywhere close to 10 pounds base, not even remotely. Maybe 15 if you do it really well. Nor should you try, you're trying to make them like it, not hate it, and most people like the camping part more than the hiking part, the campfire, etc. Remember, you spend 18 or more hours a day camped if you are a normal hiker, 16 would be the minimum for most hikes and most hikers, so talking about hiking weight vs camp weight is sort of something that really only applies to people putting long hours and big days in, which is not your beginning backpacker.
Another piece of gear I think people understand is reusing 32 oz water bottles, right now, both whole foods and trader joes here in usa have a 33 oz 'electrolyte' water bottle for about 99 cents, it's light, reasonably strong, and has a good shape for backpacks. That's a nice way to introduce someone to the notion that gear doesn't have to be expensive or specialized to work well, and be light.