Meh...
At first i was pleased to see the content. Plenty of cool pics of old things.
A lot of it was just reposting low effort memes, which is not at all a problem, it's just no great loss.
But the more i interacted with them, the more i saw long waffly comments without a firm point. Or saw them arguing in favour of common misconceptions, or in favour of outdated "heirarchies are a good thing" understandings of history, or in favour of arguments that more recent research casts a lot of doubt on.
What's the legacy of a profilic poster of middling content? Prolific is good, fediverse needs content. But the content itself was no great loss.