Two quick stories.
Ages ago (mid '80s) about 12 miles south of Red's Meadow, we passed by a small, but fully equiped trail maintenance crew (including mattocks, pulaskis, macleods, grub-hoes, even a sledge & a wheel barrow!) ... I naturally assumed they were supplied by horse packers, and thought nothing more of it.
We chatted briefly about the weather (it was raining), even briefer about their work and moved on.
Three days later as we heading back into Red's Meadow, we passed the same crew, but this time they were on the move ... they were backpacking everything ... everything! UNBELIEVABLE. Our conversation this time centered their loads, which they jokingly guessimated "probably over a 100 lbs ..." Wow, trail crew studs.
During a backpack loop in Devil's Canyon we were on our return leg, and we passed a camp (just before the long climb out of the canyon) in which 5 college age youth had set-up a full sized, back yard type BBQ (the ones with the 5 gallon propane tank) and had a full sized ice chest. In amazement, we asked them why would they haul that set-up down from Angeles Crest Highway, did they know about any lighter alternatives? They just laughed & their answer was "well, we like to eat REALLY good!" Getting to where they were was downhill, and when we asked about the uphill return, their grinning response was "we'll do it the same way we got here, only a little slower". I certainly hope they enjoyed their meals enough to made it worth it.