Mount up for the situation!

[Nakiamiie]

I don't want to be rquired to have a certain mount by a party or the general gameplay just to do something.

Who said you'd necessarily be required to by a party? Exploration is handled solo most of the time. Also, it can serve to access shortcuts and special places with lore on Eorzea or side-stories.

You are already required by parties to be X class, have Y gear and put your points in Z stats to be at the top for endgame content and Primal fights.
If you don't feel bound by that, why would you for exploration?

It's not a stupid idea, it's a great idea and that's for sure. People handle the features stupidly, there is a difference.