doubt that. it's probably more that once you get used to 90 or 144 you notice how much 60 stands out.
e.g. when i upgrade resolution my first reaction is usually " everything is so small", but then i get used to it and then when i have to use an older screen i go "everything is so big" instead.
- - - Updated - - -
i had big fps problems on my old cpu. replaced it in WoD i think? and then by legion my old CPU didn't even meet the minimum requirements anymore.
my current cpu was released in late 2015 i think, and so far so good. i do get occasional drops in fps below 30.
on the other hand, i also know people whos game crashes or goes into single digit fps from WAs. so i don't think there is only one answer to fps problems.