You will not be in trouble. Two major reasons:
1) Even if this bill were to pass, it would apply only to people posting from within the United States.
2) If this bill did pass, it would be quickly blocked in federal court. This is because it runs afoul of a law that already exists, the Communications Decency Act of 1996–specifically section 230. I'll let the Electronic Frontier Foundation explain:
Why CDA 230 Is So Important
EFF sometimes provides a legal defense to people and organizations. I suspect it would probably do so in this case,
so here's their contact info, just in case. But I also believe the issue won't come to that.
Consider that essentially all the "instructions" we make available here come out of either the "Peaceful Pill Handbook" or "Final Exit." You know who sends out that info a hell of a lot more often than we do? Amazon.com. I've seen "Final Exit" in libraries, for that matter. As fun as we are for certain web slacktivists to kick, law enforcement agencies are not run for the fun of it. They have to at least pretend to make sense, and it makes no sense for them to prosecute you and me for talking about SN, but not Jeff Bezos. And Bezos' SN-bundle-peddling ass isn't going anywhere.
Do whatever you need to do: get a VPN, start using the Tor browser. Definitely keep your mouth shut about identifying information. Remember that when the New York Times couldn't figure out how else to punish this site's owners, they doxxed them. But also don't go running around screaming about how we're any more doomed than usual, because we aren't.
Yikes. Straw-buying weapons for people is a whole other thing. Any government in the world will take you down for that one. Freaky that somebody even asked.