The hotfixing (down to 250) did pretty much nothing. My happiness didn't change, it remained what it was, and hovering over cities just made me notice the unhappiness will still grow significantly - just less so in some cases. For instance I noticed the cities stopped saying the unhappiness would grow by 4 if the city grows, instead saying +1.
After I built Armories everywhere, my happiness barely changed. I don't know what to do. A city with Barracks + Forge + Arena + Armoury in mid medieval is wailing in despair from Distress, 3-5. Take in mind I took Diligence, have filled Authority and also a Chancery boosted by 4 allies for +8 Production. Afterwards, I also took Ascetism after enhancing just to see if it would change anything. It's 1 Food per pop, so maybe it should influence it positively. It did just as little, too. -12, about to only get worse. If anything is let grow, it'll get worse and if it won't, I'll still be in the red. I have pictures to show what would happen if I let some cities grow.
4 Armories being simultaneously constructed (all rushed) made it go from -16 to -10. Any growth and it plummets, so what am I meant to do? I don't have more reduction buildings available and pure yields, as evidenced by Diligence + Chancery + Barracks + Ascetism failing so hard, do nothing. I can build that Aqueduct, but it doesn't work.
While restarting removed my old logs, cityrevolutions is alive. Apparently checking that not-met AIs are at most at 9 cities and anything more equals huge problems is no coincidence. Inca has now 8 cities (late medieval for me), and they've lost 3 to revolutions (at 470, but change from 475 to 250 did nothing of value in my experience). Russia had 10 at it's most, and lost 2 despite me simultaneously borrowing a few. Sweden lost one, has 6. I have 17 cities and I cannot do anything. I could raze several puppets (at 1 unhappiness for 4 they're absolutely worthless before imperialism), but that will be even worse. I'll still have the increased science/culture without them providing anything because razing doesn't reduce your costs.
There's a big connection between city number being high (or average, 6-11 is not really big) and the situation turning horrible for civs involved.