I'm not proud to say that I had nothing to do all day... Anyway, I decided to play POMA one more time, once again on a neutral route, with no cheats and no talents other than regeneration and business god, also with no perks that increase EXP gain, but this time, calculating every EXP I gained. According to my notes, from after the coma until now, my MC was able to gain an incredible 69075 EXP. Pills provided 13230 stat points (13230 in terms of EXP), at least for my luck, since there's a bit of probability involved. Totaling 82305 XP.
For reference, it takes 90000 EXP to max out all stats at 15k.
Apparently, I was wrong every time I said it was possible to maximize stats on a neutral route, forgive me.