I went ahead and migrated posts from coronavirus to coronavirus_pandemic and cleared up the wikis. Went with coronavirus_pandemic over covid-19_pandemic simply because it'll appear in autocomplete for taggers. This can be changed, but would highly recommend that change be done through the use of an alias so people won't repopulate the coronavirus tag with the wrong posts.

I have cleaned up the current events pool a bit. I left artworks that reference not just the pandemic but also events related to it (for example post #3819444, or post #3851440 which i believe is referencing the american captain who got laid off).
Did i overdo it?

Edit: Edited coronavirus pandemic wiki