Calling this a record is not fair. There have been a number of people who have ridden that far in a year.
I rode over 200 most days for 2 years. I was not trying to get a record or I would have ridden everyday. 150 miles into a 200 mile ride, there are hills on the right, 4 hours until sunset, head for the hills and the day is 270 miles. Or 150 miles into a winter ride, your toes are cold, and there is no shelter for the next 50 miles.
200 miles every day is not that hard. Staying well is the hard part.
The Ultra-Marathon Cycling Association is the governing over these types of records. Why don't you take it up with them? If an UMCA rider wins the 24 hour World TT championship, would they be entitled to wear a rainbow jersey? The winner only did around 22 mph? My point is simple. It starts with 4 little pins. Saying 75,000+ miles in a year is not a record is silly.
If you are Freddie Hoffman, I believe your story but he merely didn't do 150-200 miles a day for 2 years, he did it for 20 years. Freddie, you meant 20 years?
I'm nearing 60 years old but when I was in my 20's, I sometimes did 1000 mile weeks and for me, it was never easy but I lack talent. I did a couple 1000 mile weeks last year and they were not bad but I absolutely needed a couple two or three days rest and I am not saying I can comprehend what Kurt did, but I have sense of it. I am sure your account is accurate in your mind and it might be.