Yes, if it only contains files then it won’t do anything.

No, why?

4 Js-core @ 2.00 GHz

Rule 4: No association with or reference to crypto“currencies” because these are greed incentivizing pyramid schemes.

Aurora accepts cryptocurrencies as donations. And F-Droid also did but apparently its on hold.

Yes

I prefer simplewall over tinywall. I can’t remember what I didn’t like about tinywall though.