I'm not a huge Big Bang Theory Fan (however, the same cannot be said for the cans of Kaley Cuoco's cans - Big, big fan), but one can't dismiss the effect of the show. I'm not sure it's as big as Seinfeld but it's close.
Pretty big deal, IMO.
Apparently Parsons wanted to move on.
https://screenrant.com/big-bang-theo...sons-response/