Check out Highpull’s post in that thread. We can argue maybe a static number doesn’t make sense, but imo that post shows there is no special formula for everyone in what is too high or too low E2. Nothing shows that your E2 isn’t possibly too high for you, it very well may be.
Notice all three dudes on AI had to go under 40 E2, and further more 2 out of those 3 actually had to go under 30 E2. And those 2 guys actually had higher TT and FT than the guy who used the AI to stay with E2 in the 30s oddly enough.