You shouldn't, because there is nothing wrong with React, or the premise behind the team doing it.

People are imperfect, and organizations made of people are inherently imperfect. If you didn't allow yourself to use anything made by anyone who acted immorally, you wouldn't be allowed to use anything.

Should I not use Comcast for my internet if it's the only provider in my area? At a certain point the 'karma' associated with taking a hard-line on a company's ethics is no longer worth the inconvenience.