I understand that gun control's roots are in racism, but I don't see how "felon in possession" is racist. I also don't see why it matters if a gun is legal here and not there; if you're a felon in possession, you're a felon in possession.
As to watershed ruling, I presume they refer to Bruen. Sadly, Bruen laid out several instances in which, president Biden, as well as Justice Scalia have said, the 2nd Amendment is not absolute. (I disagree, but I'm not a Supreme Court justice.) One of those instances where infringement passes constitutional muster is a felon in possession. If someone wants to argue that Bruen overturns the prohibition of felons carrying guns, fine, but that may (and should) also mean that it overturns everything else, such as sensitive places, under 21 in possession, etc. That raises the question: are we (am I?) willing to allow felons to have guns in a trade to have my own rights fully restored?