Just after 3 months our notes have grown too complex to the point of it crawling every time we load a page - especially if there are more than 1 person on theh page. We ended up switching to Confluence + Google Docs (depending on the use cases). Notion definitely has a nice UX but for any meaningful large document it's utterly slow - that was 2.5 years ago so maybe they've improved but our contents are now stuck in JIRA and migrating out will take too much effort :)
It has experienced hyper growth. It is what slack is to irc in some ways.
It’s far better than google docs, confluence and wikis. Jira doesn’t do it.
I’ve looked at many options, some more developer friendly. It’s the best right now.