Yeah man, I hear ya. My 60D, 5D4, and R are bulletproof. I never had overheating issues with those cameras....they just worked.
Same with my T3i and M50. Never ever shut down, not even on the beach in CA, Hawaii or middle of summer in Vegas (115F).
But then again, to be fair, none of my nor your cameras have 4K in combination with IBIS and no crop, which is what causes more heat.
My 69 Camaro never had an issue with AC like my 1987 Camaro did. The 69 never had AC installed.
Yet it is weird that after all these years with no Canon heating issues, and with many Canon owners (as well as the company) bragging about it not overheating like Sony, suddenly it is "a non issue".
Weirder that Canon Europe advertises this, in HUGE font, as:
"Setting new standards for filmmakers… all over again"
This guy actually tested the M50 with a a range of various camera, including my M50 and it was either the longest or one of the top longest one to record before overheating (I forgot).