They also donated a bunch to the campaign to ban gay marriage in California in 2008. They're not good people by any stretch of the imagination, just an illustrative case.
a boycott is not an individual action. a boycott is when you and a significant number of other people publicly state "we're not going to use this until xyz occurs." it's a form of protest. not buying from them on your own is just not buying from them. im not boycotting the billions of businesses i dont frequent all around the world
and even if you have a group the boycott probably doesn't mean shit unless it's connected to organized labor activism against the same company.