I don't think AGPL is a perfect license, but I do think it's the best.

The flaws it has are things like the poorly-written patent clause, verbosity, ambiguity on concepts like linking, and general lack of elegance. It runs into a lot of corner cases around where code looks like data or data looks like code; there isn't a clean separation.

GPLv2 was a brilliantly-drafted license.

For all those failings, AGPL seems like the right choice for people who want their code feeding into an open ecosystem, rather than coopted by corporate giants.