Depression changes substantially the way you think, apart from leaving you with no energy. You do not realize how much or in what ways unless you have passed through it, really.

“Doing” things is literally impossible (well, torture is possible but unsustainable).

What you have seen is probably depressed people not managing well. Do not call it dopamine-bingeing because there is absolutely no intent there.

Depression is very very debilitating and it really messes up with your mind in unfatomable ways.