The reason DeSantis is hyped up is because it is believed that all factions of the GOP can unite around him. Trump supporters and moderates all seem supportive of him and he seems to focus on different ideas than traditional GOP talking points. For example as governor he focused on the Everglades and water quality, but is also focusing on big tech. Basically a wide array of new ideas that feels fresh from the pre Trump era but doesn't seem to alienate any specific group at least more so than Trump did.
or he's hyped because he lives in FL like Trump and centered his entire campaign and governorship around being as pro Trump as possible
Yeah I agree that is a big part of his appeal as well and is why he would do good with Trump supporters. However, some of his political stances differ from Trump which could help him with moderates and other factions of the party beyond just the Trump wing.