Bear in mind that of the 40% 50+ YEPs, half of those are 50 YEPs.
This means that 80% of elite tourneys are 50 YEPs or less, the range that is preferred by 72% of premium members.
Comparing side-by-side for relative numbers entered doesn't seem to me to prove much. The issue isn't whether more people would play in a lower-fees tourney, but whether we have enough of each type to be fair to those who have preferences.
Seems reasonable to me.