What genocide? This whole thing boiled over due to a proposed law to allow extradition of HK residents to China, which is bad, but it's not genocide.
HK is getting most of the China attention lately but right before that it was all directly about the Uyghurs. HK gets more attention because they have more ability to broadcast their struggle. Videos of people fighting police are more entertaining than satellite photos of bland looking buildings.
That China is forcing abortions and harvesting organs from people in concentration camps is what gives the HK and global business capitulation stories their edge though. A country slightly reducing the independence of one of its cities isn't all that big of a deal, unless that country is evil incarnate. Businesses working within the framework set by, and cooperating with, the governments they are working under isn't a big deal, unless that government is evil incarnate.
It turns those things in to the equivalent of Poland being swallowed up by WW2 Germany and allied countries fueling the German war machine. Yes I am making a Nazi reference, of which I consider the CCP to be within the ballpark of.
The idea that everything that touches China is toxic seems reasonable, but it still doesn't explain why are we suddenly drawing the line at censorship in entertainment. Everything is made in China, and Apple is no stranger to the Chinese market.
I don't know how it worked with the nazis, but I'd guess at some point it became unacceptable for US companies to do business with them. Maybe that's where this is headed.
Not to mention Kashmir, which isn't even in the news anymore.