Personally I think there is an overreaction to the Lux buff
That's more a result of past experiences against her ult than an understanding of the champions current strength.
Actually you could say this about pretty much any negative reaction to a buff for a champion. You focus more on how that champion has impacted you negatively, so much that you blind yourself with bias.
Like with Lux's ult buff, my mind immediately goes back to a long time ago when I was much worse at the game and kept getting caught by Lux ults from bots. It's a harsh memory, but not enough to justify thinking that Lux is ok enough to not need buffs or heaven forbid somehow needs nerfs.
So let's just try and look at these changes objectively guys. Else we let our bias blind us from making informed decisions.
Or we can purposely let our bias blind us. Like how I view Katarina's ult getting a 15 second cooldown at max rank is insane and not in the good way.