No, quite the opposite, you missed the fact that you made a false equivalence.
The situation is not symmetric. You can't go into someone's house, ask them to change how they lay out their furniture, and if they complain, tell them to move somewhere else. But it's _perfectly fine_ to say to someone who wants to come into your house only if you change your furniture, "well if you don't like it, go somewhere else".
So the whole premise of "if you don't like what EU does to iOS, use something else" is a-priori wrong. Sure you can make that case, but it's an invalid one. So no, thank you.