I really like the idea, I’m going to have to try it again sometime soon.
The last time I tried, their database was missing a lot of books. When I imported my goodreads history, some books got dropped. But, worse, some of the books they didn’t know about were incorrectly matched to completely different books in their database. So my my reading history on bookwyrm.social is currently kind of a mess. I messaged someone on mastodon, who directed me to file an issue on github. I did, but no one ever responded to it.
I’ve worked at more than one job where I was told it was OK to use MIT, or Apacje-2.0 licensed things, but to not touch any GPL or AGPL software.
So, even though there wasn’t any non-commercial clause in the license, it’s copyleft nature led to that effect at those businesses.
In general, I like the balance that the GPL & AGPL strike - commercial use is allowed, but the company has to give back. The “condom code” thing that you mentioned is certainly less than ideal. I would prefer that businesses open up their full codebase. But, I think the more likely scenario is that they just don’t use any open source at all (or they use it and violate the license!) I’d prefer condom code over either of those possibilities.