Looks like you don't have to choose between Boeing and Google! https://www.theverge.com/2021/1/25/22243138/google-union-alp...

Though yes, I'm not sure if that union still exists now. The point is that you do not have to prefer working at every company that has a union over every company that does not have a union. It's enough to prefer having a union over not having a union at any company you do work for.