If I can selfvote the coins to me,

You can't, though, because others can downvote. Even the amount isn't set (exactly) only by your vote but by others votes on the rest of the pool. With n^2 the latter is even more true in practice (because highly concentrated votes elsewhere can take a LOT from the pool and significant reduce your self-vote payout).

The pool is a shared resource.

Tipping doesn't work among the scavengers of scarcity, apparently.
Only people that have worked for tips really give them.

I see buskers getting tips all the time. I've seen tips work in social media crypto communities when markets aren't down 70-90% and people actually feel like they have something to give away. Not so much recently, but maybe that is better than spewing out lots of coins to inflation regardless of market conditions?