Ty Law won three rings prior to Spygate and was no longer on the team by then (released in 2005, only honorary game captain appearances since), so he's a poor example.
And, yes, it will be when they come up, as it should be. But if all three continue to tear the cover off the ball and have great careers in the intervening time, the sign-stealing stuff won't matter quite as much when it comes time to cast ballots because the empyrical evidence will suggest they did it without needing the advantage. If all three see their careers go into the toilet, they likely will be afterthoughts by the time 5 years have passed since each retires.
I know it's a bad comp, but look at the PED guys and how they are still vilified, even as stances soften within the game and the industry, by the public as being guys who were only able to accomplish what they did because of 'roids. People want to put asterisks next to the records of pretty much all of them, even ones that never failed any kind of drug test once the policy was in place. To the public, they will always, all of them, too a shortcut to greatness and they will never shake it. Even David Ortiz is still lumped in with the steroid users because people are stupid and don't want to ever learn all the facts (like in Spygate and Deflategate). These are the same people who will also say that if the Astros didn't cheat, they probably wouldn't have even made the playoffs, because A + B always equals C for them. The nuance that the Astros maybe won a couple extra games using that competitive advantage (i would be willing to bet less than 5 in the regular season) and the players still had to have the talent to do what they did, foreknowledge or not, or the role that the pitching and defense played in the final scores being what they were. All that goes out the window in the mind's eye of the general public, who can only see that they cheated and they won, so the winning must be only because of the cheating.
So that 2017 title will always be regarded by most casual/uninformed fans as ill-gotten and undeserved and all those who helped to secure it nothing less than the scum of the earth, regardless of what they do for the rest of their careers. Alex Bregman could cure cancer by hitting a home run and people will still call him a cheater and question the legitimacy of the cure.