I just bought a laptop cooler as an experiment. It is big and bulky but it only cost $20 and I wanted it to experiment with external cooling for my M2 MacBook Air. Long story short, it works very well to keep the M2 from throttling on CPU intensive work but less well with GPU stuff (though it still makes a difference.)Doesn't that defeat the whole purpose? If one gets the air its for the size difference, bringing around more external items would just kill that line of thinking?
I would never bring the cooling pad with me but leaving it at home and maybe using it infrequently for things like Handbrake video compression or a GPU intensive game seems like it would still be worth it. So yes, carrying one around would defeat the purpose of buying an M2 MBA but owning one could be useful to anyone who occasionally needs unthrottled performance .