I agree with you completely, Taxation is Theft.

I think Crypto UBI has a place, I don't even think it necessarily even needs anything more complex than bitcoin.

The best way to growth the cryptocurrency space is to increase adoption.

You literally give away the crypto, I think you can even make the case for a selfish incentive to do so to increase adoption and value of the currency.

You build a system to fairly distribute a pot of money, and I think the money will come.

The hard part is preventing abuse:

Crypto has made a bunch of anarchist/libertarian leaning people much wealthier than they previously imagined, if the crypto community can voluntarily supplant and eventually replace the welfare state it will help us to destroy any and all justification for the warfare state that it is attached to.

I put a lot of thought and experimentation into this back before I got wary of reddit's censorship:

https://www.reddit.com/r/FairShare/top/

https://fair-share.github.io/#/about

https://www.reddit.com/r/FairShare/wiki/voluntarystatelessdistributed

I want to look into rebuilding this idea in Ethereum soon, but I will need to find a good oracle that can be trusted to limit signups somehow.