I know this is old news but my new 13" M1 MBP does not ever even get warm. I bought it to replace my 12.9" iPad as a 2nd desktop system for my daily stock trading so it mostly sits here streaming CNBC all day. Not once has it felt even warm at any part of the chassis, top or bottom. In fact it feels quite cold. The bottom of my 16" I9 by contrast is noticeably warm doing very similar tasks. Just amazing.