Frankly I'd go further and say that not even Twitter and Parler were competitors.

Wasn't Parler a glorified WordPress comments section? That's all fine and well, but if I started a website and broke the TOS I doubt anybody would have wept for my losses in the same way.

It's really odd seeing people conflate, or even manufacture, predominant socio-political ideologies for companies and then labelling them competitors when those made-up ideologies differ.