Earlier quoted context omitted.
If all the content creators stopped...I'd have a lot of YouTube content to watch still. It's not like when the factory stops because the workers strike, or there are no sports game because the players walked out. There's more youtube than I know what to do with no matter what.
There is probably a demographic of YouTube viewers who skew towards watching fresh content from their favorite content creators. YouTube would probably see reduced engagement from them due to a strike. I'm not sure what percent of total views they account for though.
But there is so much out there I could watch if they all got hit by a bus one day.