So all it'll do is make them send it to spam. On the other hand, attach a few LN Sats to the address and maybe make it into an NFT or something, and then people may notice.
You can't attach LN sats to an address if an address doesn't have an open channel. And intoducing people to Bitcoin through NFT is like introducing people to physics with flat Earth theory.
What will happen to the bitcoin price when everyone starts receiving empty bitcoin paper wallets with everything they get on the post?
If this would happen on a truly large scale, like covering 60-80% of the population, then it would probably cause a small temporary downside movement, because it would be a negative event - someone sending people empty wallets, hoping that they would use them and steal their coins/