Honestly, Georgia RICO is a mess of a law, and likely unconstitutional.
While the Georgia indictment is the most satisfying to read, it's also the weakest of the four, structurally speaking. There are a lot of serious charges in there, but there's also a lot of fluff that a more polished indictment would not include.
Jack Smith's two indictments are probably the gold standard for streamlined and bulletproof cases. Fani Willis' indictment, on the other hand... well, it's a bit of a mess.
I'll put it this way. If Trump is convicted on all charges in all cases, the conviction in DC and Florida would have very little room for appeal, the one in Georgia would have a fairly decent chance of being thrown out, or at least being sent back for a second trial, minus a bunch of charges.
All that said. Yeah. I think the RICO charge for Trump in Georgia is wrong. Trump would not qualify for federal RICO, and Georgia should have a standard higher than "Two or more people who talked about a crime before (or while) committing the crime".