I didnt claim a pureclass Thief or Assassin would be outright *unplayable*. So yeah they are "still okay".

I said Rogue is clearly underpowered. All other classes are pretty well balanced against each other, but Rogue clearly lags behind.

A Wizard of a subclass you dont fancy (IMHO those are all pretty fine, though Abjuration is completely OP) or a Trickster Cleric or a Valor Bard still is a Wizard, Cleric or Bard. Which is why they arent as weak.