I used jump all the time, and push occasionally, and I rest often. But I don't think these things are the same as barrelmancy. unlike the later, the former doesn't require a special work from me (like searching around and picking up any barrel I can find) to be viable way of dealing with fights. these things are an integral part of the game, and are meant to be used a lot.

Larian's Biggest Oversight, what to do about it, and My personal review of BG3 EA
"74.85% of you stood with the Tieflings, and 25.15% of you sided with Minthara. Good outweighs evil, it seems."