> "Where's the hellfire?"

I'm not sure, but I can offer two hypothesizes that aren't mutually exclusive.

1) Gun owners have been marginalized on social media and their hellfire is going unnoticed on alternative platforms, or simply isn't promoted by algorithmic timelines.

2) Gun owners are already predisposed to purchasing guns with cash, for privacy reasons, so many don't feel particularly inconvenienced by this development.

Those look like two isolated cases at the payment processors. But if that keeps up, it'll be a quick road to legislation