I used Gentoo back in the day and the wiki was good, I even contributed to it at times. Eventually I switched distro (didn't want to spend all my time compiling), and a few years later I went to look at the wiki and it had become much worse.

Do you know what the story was there, what happened? Why was it deleted?

It was? Did they bring it back because I do see stuff on their forums..

I do prefer gentoo wiki over arch wiki from time to time as things feel less cluttered to me but that's just my opinion.