There's a lot of truth to this. I would replaced "average and over the age of 35" with "outside of the Top 10-20% and over the age of 35".
You're exactly right about the time and energy elements. Since turning 35, I have noticed less of a desire to game hard and do long approach sessions. I have done approach sessions since turning 35, but it seems like more of a drag now. I've kept my fitness consistent and my photos have rated well on Photofeeler, but not Top 10-20%. Most would think I'm around a 7.
For a man 35-early 40s, it's common to go on dates from swipe apps with women in their 30s who wouldn't have given you the time of day in their primes. Many men can feel this vibe on some of their dates. The women also resent doing this. Often times, these women don't feel "all the feelz" no matter what you do, and they will bail, creating a "one date, no sex, no second date" interaction. Yes, this is due to them feeling jaded and bitter.