Interesting article! So Brady took "an equity stake in the company and [got] a signing bonus in crypto", then went on to make advertisements even though "The NFL has banned cryptocurrency and NFT sponsorships for its teams". Seems that he, or likely his lawyer and/or financial adviser, will have been evaluated the legitimacy since he's deep into caveat emptor territory. Like innocently buying a stolen car: you're unlikely to be in legal peril but you will lose the car (and gain a claim against the thief that sold it to you)