Maybe the best way is to see for yourself using an internet archive:
https://web.archive.org/web/*/https://pokemondb.net/pokebase
There is also some history on this page (though this was written a while ago):
https://pokemondb.net/about
- The community was smaller in 2010-11. It was mostly the same few people asking and answering questions, and it was easier to get points (which is why everyone at the top of the points table is from those years).
- The site picked up a lot in 2012-14, which coincided with the website in general being redesigned. The Showdown server
https://pokemondb.net/pokebase/meta/28174 was big at the time. Most of the people I know from this site were active in this era.
- Activity slowed since then, as social media + messaging apps have become dominant and a lot of questions have already been asked. Or maybe it's just me... this place has been mostly my responsibility since I became mod in 2015.
- More recently, we've been tightening the rules and honing in on the site's Q&A niche, which I think keeps it spry. It's probably the tidiest it's ever been nowadays.