While I like his visual style, I don't find his work has a whole lot of point to it beyond simple asthetics, yet the work is often touted as being meaningful. There is also the fact that he has been known to appropriate other artists work but not credit it, yet be aggressive (certainly legally) towards those who do the same with his work.

Mark Vallen has an interesting article: https://www.art-for-a-change.com/Obey/index.htm showing the propaganda art he has copied from and I find it very revealing that once you take away what he's copied, you aren't left with much original art at all. Also, it seems that any impact and power the original propaganda art had has been lost when reused by Fairey.

I certainly can't fault his business sense, and he's made himself very wealthy from his art. However using some of that wealth to donate to revolutionary causes could come across as trying to buy credibility.

However, he's got a lot of fans, and his work is widely exhibited and in some very classy places, so he must be doing something right!