Just no.
IMO Tyson is the greatest heavy weight boxer of all time. Jones wins due to his superior genetics, not his training. He entered mma relatively late and doesnt train year round...he only trains when he's fighting...6 weeks out from the actual fight. The guy is a freak of nature but he is not even close to the "greatest mixed martial artist". Tyson was a genetic freak too but he was a student of boxing under Cus D'Amato, dedicated to his craft from a young age and IMO the greatest heavy weight ever.
Jones is in the p4p GOAT discussion as well as the GOAT LHW, a division that includes Wandy, Chuck, Tito, Shogun, Shamrock, Henderson and countless others, and is considered in the Top 5 p4p of all time. This is coming from a Jones hater since before he won the belt.
Tyson isn't even close to the top all time of his own weightclass. Ali, Foreman, Frazier, Lewis, Loius, Rocky, Holmes, Dempsey, Johnson, Holyfield, hell, maybe the Klitschkos have records that trump his. All Tyson was was an enigma and hype that derailed horribly. Once he was figured out he had nothing. Skills don't evaporate as entirely as that. But Americans insist on holding onto him to ignore what's happened since and thrive on 80's nonsense. Being young doesn't add enough weight to make you a GOAT. Having that frightening aura would suggest Foreman as the true GOAT, and even that would be silly. And if we looked at p4p boxing considerations, Tyson wouldn't even be worth mentioning.
Honestly I don't know how anyone could say Tyson was a better boxer than Jones is an MMArtist other than (1) Knowing nothing about either sport or (2) thinking boxers are more talented by default by it being an older sport.