It is my understanding that if you have earned medals in the military, you are supposed to wear them on your formal attire.
Only if you’re narcissistic. There is no AR that says that you are display 40 lbs of ribbons and various medals on your tunic.
Dwight Eisenhower, who was a General of the Army, wore nothing except his rank and army lapel badges.
This looks more like what General Zukov, other Russian generals and those from North Korea wore.