For example, if I'm feeling stressed/anxious, I'll scroll/browse/distract myself to avoid the negative feelings. I'm not seeking them like doom scrolling says.
Some of the stuff is genuinely funny and entertaining, and it would probably be OK in very limited doses. But I have fallen into a habit of (occasionally) starting out watching on ofe those things, and then continually swiping to the next one and watching that crap like a zombie until a hour has gone by. No bueno.