Yes, you have right, the ONLY stable version that works well is CakePHP 2, so i remain a big fan.
In CakePHP 3 everything is so slow (on the same platform), that for me is unusable.
When CakePHP 4 was lounched, i was very glad to test it, but only some minutes.
In CakePHP 4 also the first query on Postgres with a field created that is a timestamp without time zone, breaks everithing, and nobody helps me from a few months. The Core don’t recognize the type timestamp without time zone. Yes, also at me, MySQL is on the front, but some projects us Postgres, that can not be ignored. That mean, that CakePHP 4 don’t pass my first testing step.