>I have a feeling that he actually personally thinks that these are good apps and is annoyed that people are calling him out for believing this.

It's more like he worked hard on Twitter to become "the Marzipan guy", so now he has stake in this game. If he were to express the slightest concern, his consulting/Patreon revenue would suffer, so he has to believe™ in Marzipan.

Always look for the incentives!