Just skimmed the article, but the CF your employer used was probably around a lot longer than AI? There's parts of it that can bring everything down. Then there's parts of it that will bring down just what your team(s) put in a load of hard work to build on top of it.

The blog implies that CF's core business is suffering because of added investment in what the author describes as AI. See their useEffect bug as an example.

EDIT: To be clear, my employer still uses CF and I don't see any evidence that it's gotten worse.