Check specific models, but my recollection is that the Macbook Airs are fanless and thus throttle the CPU/GPU when they get hot. The MBPs have fans, but are pretty quiet and probably also throttle down.
I had a M1 MBP for a few months and was able to max the fan out with Figma. It was still quiet enough to not interfere with Zoom calls.
My current M1Max Mac Studio is very very quiet, and I haven’t come close to making it sweat yet. I haven’t needed to open a large Figma project since buying it, but I’ve got the Arturia V Collection, Pigments and soon Roland Cloud so should be able to build some monster Ableton projects to see what happens.