And I think none of them are an actual miners, so bitcoin does not give a shit about this "vast majority" of yours.

Why people are so keen to put their nose in things that don't concern them? Are you bored, or what?
Had miners needed "a decentralized mining agents" (whatever such creatures are), they would have invented them.
Bit it seem that centralized minimizing polls don't bother them, since most of the blocks are mined through such.
Of course they don't bother them. Why would minimizing polls bother miners, if miners are free to change the pool anytime they like?
It's not like they sign 12-month contracts with mining pools - they just chose the one that suits them best, at a specific moment in time.
And how is it any of your business?

From what I see, the only people who have problems with mining pools are those who don't mine at all - that's really funny.
But the most entertaining part is that you cannot do anything about it - and it's just so much fun to see you sweating

If you want to change the world of mining, there is only one thing you can do: start mining yourself.
But since you don't want to start mining, please at least stop whining - for your own sake.