I do think 50% is a lot. I think 10% is a lot, which is why I often build monasteries in the capital, even when the purpose is not spreading religion. Some 10 years ago when I already had some deity wins I would mostly build an academy in my capital. Now I only sometimes do, when the capital is very suitable for it or perhaps as a PHI leader with a mediocre capital.
The issue is the price. You are mainly competing with the philo bulb and it's just very hard to beat that, because paci makes future
so much cheaper. Yes you can do both, an academy and a philo bulb, in which case you are paying more for the 2nd
.
I don't think your claim that an academy has compounding benefits is necessarily valid. Doesn't earlier access to pacifism also have compounding benefits? Are you sure that it compounds less than an academy? Note also how this line aligns perfectly with my contempt towards buildings in general.
Frankly it is what causes it. No point in whipping mediocre buildings because in caste+paci size does matter. As a bonus, you have philo as a trade bait, though it's often better to hold the monopoly.
I don't sit around in pacifism all game anyway, I built infrastructure and settle many more cities or smash them with knight/trebs or cannons.
You should spend the minimal possible amount of time in pacifism, intending to go to war when you have the techs for it. Consider the possibility that you can do exactly the thing you do with less infrastructure.
As you probably know, I have seen your games and I think you play very well. I can say that I've learned from your games. I don't agree with every decision that you make. To me style is an excuse, it's more a matter of what you (here and in the following sentences I don't mean
you in particular) are used to and feel comfortable with. I try to always force myself to question my habits and aim to investigate new possibilities. That's how I learn. The fact that you can beat deity doesn't mean that you are doing everything the best possible way, not even close to it. I hope you haven't stopped questioning your habits.