> Claiming that Wikipedia has implemented all of these suggestions in the past is just plainly false

I'm claiming people, not necessarily wikipedia, have tried them. However many have been tried by Wikipedia too.

> just belittling efforts at changing the status quo?

The status quo is pretty good. Change for change sake is an anti-pattern.

Regardless, i think people who like these ideas should try them, on their own site. I suspect they will quickly find out why Wikipedia does not want to do them.

After all, martin luther didnt just whine that the pope wouldnt listen to him, he made his own thing.