How can anyone still say that Mon-El could have changed things on Daxam if he would willingly return? The last 2 episodes fully established that Mon-El having a voice in what Daxam would become as they moved forward was next to impossible.
Mon-El said that nothing would change if he returned and no dialog is accidental. He is the character that can deliver a reliable narrative about his parents and what they’re like. But the show didn’t just tell us that, in the very next episode they showed us that as well.