That's a really weird black and white attitude to take!
Not really. I'm not alone and people make these kinds of political/economic statements all the time. If someone doesn't want to buy any (say) Nestle products as a statement that's their business.
If you're going to have a blanket ban on technology that some asshole may have been associated with, you're going to be living in the stone age.
Open source software has a huge number of license that can be chosen from. There are licenses that are equivalent to GPL/LGPL. Besides I'm perfect free to use and modify GPLed software...I'll simply never distribute it. No one is harmed except those that cannot profit from my (and others that feel the same) modifications. Too bad, tell RS to stop being a dick if you care in the slightest.
And if you never want to deal with an asshole, you'll be living as a hermit.
Assholes are fine. I'm an asshole. Luckily I have normal people for friends.

Good people and evil people are found in folk tales (and seemingly the internet) - real life is usually a lot more complicated than that.
Of course...notice I said "..in his public persona". He gets noticed by talking shit. His BS offends me and gives a bad impression (like stereotypes) of programmers to regular people. So screw him and anyone that supports him and his deeds.