> FactoryFactory has gone mostly extinct

it really depends on your project, and what framework(s) and libraries you choose to use.

Java still has a tonne of legacy projects using old(er) frameworks that rely on such patterns - spring has some old versions which is like that, and i am certain plenty of java projects are retaining those old versions due to lack of desire to upgrade.

If you're starting a greenfield development in java, you surely would not befall into that factoryfactory pattern (unless you're just copy/pasting old projects around...). But i imagine there's way fewer greenfield projects compared to older projects requiring maintenance.