I did the thermal pad mod myself and it does fix the high fan speed mostly. But it's like putting a band-aid onto a cut throat. For it to work perfectly, the machine has to be vertically or on a cooling stand that allows more air onto the bottom plate.
I did the mod mostly because of the VRM throttle, as I gave up using this machine with external monitors. I do most of my work on my Windows Desktop PC now. The 16" has so many flaws that I'm thinking about to leave the Mac universe. Windows machines also have flaws, but they're not that expensive. Luckily, 90% of my work can be done on Windows, too.
The next time I will not buy any high performance notebook again from Apple. They're too much obsessed with thinness and design over function that it will not get any better.
Just look at all the machines from 2016 to now.