**** What’s the worst thing about the Alman Brothers? Greg’s damn keyboard! ****
True, but it’s all relative, isn’t it? Not a “bad” player, but certainly the least accomplished instrumentalist in a band of great (Rock) instrumentalists. However, I can’t imagine the sound of TABB without the sound of Greg’s organ. Would the band have been better with a “better” organ player? Maybe. Not so sure. Be careful what you wish for.
Point is that while I agree with @hilde45 and @bigtwin if one likes that style of music, Bob James is an icon in that scene.