You need the M1 macbook air with a thermal mod then. It connects the chassis to the heatsink. The entire bottom gets warm and the area around the heatsink can get up to 50-55C. On the plus side, with the thermal mod, it doesn't really throttle at all, so on longer workloads it performs about the same as the pro.
My 2020 MBP is so hot I hate using it on my lap.
I have an X1 Carbon 7th Gen that I've been using as a laptop pad for my MBP the last few months... MacOS is just so much more convenient.