I don't think you need to understand all the nerdy talk or even participate in it. In fact, I often say technology is best when it fades into the background. That said, we need to grow Nostr to more conversations.

As for the stores, I've sold and bought more stuff via Nostr over the past year than I have in my previous 3 years with Bitcoin.

I've sold phones, I've sold crafts, I've bought shirts, steaks, and artwork all because of Nostr via Nostr marketplaces or my own.

My friend nostr:npub1lqpuy5pgpce04rw48sdvp5khfm60j3d5vv8ufugdp97jt59rlhasry9h3r, the friend that I told you about, that I setup his online store, sells lots of merchandise for bitcoin.

nostr:npub17nd4yu9anyd3004pumgrtazaacujjxwzj36thtqsxskjy0r5urgqf6950x sells artwork for bitcoin.

People do want to part with their bitcoin, you just have to find the right people and audience.

As for safety, I'm sorry that you can't truly block here, but please remember that if you blocked someone on Twitter, they would just create a new account to view your content. Blocks don't work. Hopefully devs can build more tools for you to give you more control and more privacy.