If convicted felons lose their second amendment rights should they also lose their 1st amendment rights, and the other rights as well?
I look at "losing rights" kinda like the "once saved/always saved" argument with Calvinists. Traditionally, Calvinism believes you cannot lose your salvation. I would absolutely agree with them that one cannot "lose" their salvation, but one can certainly forfeit it by choice (Hebrews 6:4-6 being the obvious evidence). In the same regard, I would argue that rights being taken away from a convicted felon are not "lost", but forfeited by choice through their actions.
Now, which rights they should forfeit is a different discussion, but I'm perfectly fine with their 2A rights being one of them, at least in cases of violent crime.