Indeed many cameras go hot, and often too hot too fast so you have a hard time recording what you want to record.
Linus tech tips put water cooling on a 8K RED camera, and i dont think they did it just for the giggles.
My own dji Osmo Action camera, well after a 15 minute or so 4K/60 recording session in the living room, it is so hot, not least the metal parts on the lens and the so called heat sink below it that those parts you dont really want to touch thin sensitive skin.
And i am the guy that to prove a point ( or show off ) held on to a insane hot heating pipe in a apartment, for a good 2 minutes longer than any other one was able to do.
Though that also did result in some sense problems many years after that, where i had problems feeling little things i was holding in the palm of that hand.
That BTW almost changed my all ready well established nic name to something else
which is good i think, otherwise some might think i was some S&M freak.