> once you have a community at critical mass around a reasonably good tool, that trumps most other things

This matters a lot less in the age of AI. AI doesn't need a massive number of community-built libraries, it can just write its own. It doesn't need a million tutorials floating out there on the interwebs because unlike most programmers, it will actually read the spec and documentation (tutorials are just projections of the docs/spec anyway). AI doesn't have to avoid languages with no job market because it just needs to do the job at hand, not build a career. This makes it easier for small languages and DSLs to gain usage where they never would have before.

I think AI might spell the end of the language monoculture (top 20 are mostly slight variations on languages circling the same design) that has persisted in programming.