If you make use of a 30 years of library that does simple blocking IO and you call that library from a virtual thread you literally have non-blocking behavior - so your "didn't update it's entire ecosystem" is plain wrong. It's also just a Thread, so even consuming virtual threads by old libs is just fine.

Also, what 'party'? There is java, go, Haskell and erlang with anything similar. The majority of programming languages don't have such a feature so it's pretty questionable use of word to "be late".