I agree with what you said. I would rather listen to someone giving me their honest opinion then just recycling Apple's talking points from the event. If you listen to the majority of his issues with the iPhone Air they mostly center around heat dissipation and throttling from the A19 Pro chip under heavy loads, which in all honesty are very valid concerns. I have those same concerns myself.
I am not knocking the Air because these early concerns may not bear out once people get them in their hands, who knows. To be clear I do think the Air is an incredible device, and brilliant form. Very polished.
Also if you watch Marques video he does say himself that he will hold out his full opinion on the Air until he has more time to test it and live with it. These were really just his first thoughts on the device.