Of course Kemp declines. It’s what RINOS do. They can’t bear to help the party when their RINO guy isn’t sitting atop it.
The MAGA crew seems split on this one. Half say that Kemp is a scumbag for not running, and the other half day he's a scumbag who they are very glad isn't running, and who they wouldn't have supported anyway.
Maybe it's that kind of environment that led Kemp to say "no thanks, I'm good" when asked if he would run.
MTG will likely run for the nomination and win, which should thrill MAGA. So I'm not sure what they're complaining about.