No one got penalized for doing the LSC glitch. No one got penalized for car duping. No one got penalized for selling dune buggies for $19k profit a pop. Or for RP glitching.
The only thing people got money resets was for modding money, or using the "share" option when receiving money. They still got to keep their vehicles.
Rockstar is claiming they will reset the money of people who have received modded money . . . that will probably happen eventually. However, they did not mention anything about taking away cars that you've bought with the money.