Disagree. The DM should provide some sort of reason for the party to come together. Some sort of external influence, to bring in any characters that don't start the game together.
But it is the duty of the player to roll with it. Don't fight the plot hook. What's the point?
No, we don't. But I might prefer it to another three years of Trump, followed by whatever fascist replaces him.
If there is a third option, I'm happy to consider it.