Derek is an old-school keyboard player, but he seems a little too proud of that fact. I saw a YouTube vid of him, I think it had to do with Black Country Communion, where he talked about having a real Hammond B-3 and some other classic keyboards, because you really need that to get the classic sounds. I mostly agree with him, and to some extent understand him taking shots at Jordan and all his "gadgets". I mean, I'm old-school too, and a lot of that stuff does strike me as gimmicky.
But he's also being a dick about it. He takes his shots, and if you feel he goes too far, then he's just joking around, having fun, and you just don't get it. And he uses that as carte blanche to say whatever he wants, which is lame. Jordan is continually looking for new ways to make music, new sounds, new devices. There's nothing wrong with that.