You are right it's a fine record of course
About equal to Arnie's and a mile behind Tiger and Jack
Fact is many contemporaries were fascinated by Hogan.
May I point out the main "move" in the modern swing was not evident in Hogans. That is the back of the left hand and forearm being flat and in line (square) thru as much of the swing as possible. This is a key point of Harmons teaching and is evident in both Tiger and Jacks techniques. Palmer emphasised this the most and in the early sixties his driving and long iron play was much superior to Hogans - and every one else.
I do think though Hogan did not develop golf technique beyond Percy Boomer and Boomers thinking was mechanically superior by far. Basically Hogan was not educated in the laws of physics.
Mindy took it all a big leap further I believe and his discussion of the square technique of Tiger and Nicklaus is a classic reference.