Not the same guy but this is basically impossible. I was able to get maybe two of the dozens of people I have to contact regularly to use it, then they dropped SMS support and it's been dead ever since for me.

Create fake tinder profiles of hot women, match with thousands of men, and tell them "message me on signal". Dont scam them, that would be rude.

Up to you if you have sex with them or not.

Yes, that's the issue