It's not going to help. Not to be one who thinks this is no big deal, because it is, but the players are already paying taxes on income earned in other states when they play road games. The Super Bowl win costing Darnold $75,000 will live in infamy.
I don't know how WA plans to handle income earned outside of WA by WA residents, but it's possible that Seahawks players are going to be double-taxed on road game income.
But you know what? I don't give a fuck about any of those players having to pay more because one can easily surmise that 90% of them voted Democrat.