Every compact camera design has some compromises, as compared to a big/heavy DSLR. The DSLR probably uses phase detection in the autofocus system, and the compact probably uses contrast detection. They both fall apart if you try to shoot a monochrome or monotone wall, because neither one will find much to work with, but the phase type tends to work better for normal stuff, like the fur on the neck of a marmot. The DSLR probably has a much faster rate for continuous burst shooting. But, really, do you need to shoot the marmot fur at 6 or 8 frames per second? I can, and I will on rare occasions. I find that one frame per second is more economical on memory card space. But that is why they invented 16, 32, and 64 Gigabyte cards.
Compact cameras are getting better, but they used to have serious shutter lag. From the moment that you push the shutter button until it actually goes CRICK can seem like an eternity of time.
Some backpackers have basketball-player size hands, and they like a big DSLR with big dials and buttons. Some backpackers would prefer to squint at a menu to select some shooting feature. Meanwhile, the marmot ate one boot and is heading for the other one. I like lots of buttons that are marked with icons that I can remember.
When you need to zoom in to get the glint in the marmot's eye, do you push some power zoom button one way or the other way, or do you twist a zoom barrel on a lens? Or, maybe a push-pull zoom is quieter.
For shooting wildlife video, some cameras have a tiny microphone built into the front of the camera housing. Unfortunately, those tend to pick up the noise of me shuffling around with control buttons. An external shotgun microphone can be mounted up on the hot shoe to avoid that problem. That way, you can pick up the audio of the marmot taking a leak on a boulder.