Not hating on open source, just let people use what fits their expectations and needs and stop deterring them with gatekeeping :P
UX = user experience
The top comment said that he's "gotta eat", the other one said he got "screwed over by the API fiasco". I'm not saying at all that he shouldn't charge for his app, I'm not even saying he should change anything. I just don't think it makes sense to act like he's some poor starving guy. He's a relatively rich businessman doing (very good) business.