Keep in mind Intel marketing as well which advertises CPU with way less heat than they expose in real life.
The way you have this machines is because apple is commercial company and they should follow market demands.
"10 cores", "silent": you can only choose one.
If you want a reliable silent machine, use the proper tool for the job. I.e. mac mini / imac. There is the only way to get proper cooling. You can't have silent cooling in your laptop. Especially if it's "a top spec".