N1b
It's not for performance reasons; I just like keeping the recent apps list clean when I'm not using anything and having easy control over when all of my app states gets reset.
I clear my apps list often but it's a bit of an inconvenience on GrapheneOS where the "Close all" button placement of stock Android has a screenshot button in its place instead.
It's not a big deal though, and I understand this might be a preference of mine only, but I appreciate the help.