Whats clunky about them? I've used and owned a few.

They're fine. The interface is largely good now.

The reality it's a very different gaming experience and many people don't like it

The barrier for entry on any apple product is going to be high.

There is no UI problem. There is no hardware problem. There s a game problem. Beyond golf, beat saber, and flight sims, the games are not good on it