>Claims are challenged all the time by other users and there are enough cases where fact checkers were wrong or heavily biased.

I've only seen a handful of cases where they were wrong of heavily biased, but I've seen hundreds of cases where the poster refuses to accept they are wrong and the fact checkers are right.

>Community notes provide higher quality info, it is the better approach. That is an opinion of course.

Roughly the same info but from less trusted sources and with less controls being higher quality sounds like a big bag of wishes but not grounded in reality.

>We will probably see community notes on trusted flaggers.

I expect lots of partisan complaining and yelling, but not a lot of actual valid challenges.