They are under a (false) impression that they are the majority and when everyone moves to Parler the broader audience will be on their platform. And twitter will become a place where the left is just talking to each other and agreeing. Of course, as we can all see the reality is completely opposite. On any conservative platform you'll find a narrow audience discussing only one thing - politics. And it's boring to discuss only politics, even to them.
What's the point of twitter if your favorite commentators aren't even on there? That's the issue. There will likely be a mass exodus of other conservative commentators to parler.
No, I don’t see the irony. Can you elaborate? Twitter will still have ~some conservatives ~, media, tech people, CEOs, athletes, global politicians etc. Parler will only have conservative politicians and their supporters from the US