It would be amazing to ditch the company control and so. The main problem is that it’s difficult to get users to join it. I mean just look at how many people still use reddit and discord.

Should be fine on more modern cars (ie. Everything with fuel injection, newer than 1990)

I run gas that’s probably 1-2y old in my pickup and never had any issues.

Just beware that ethanol might hurt rubber lines if you have them. So best to mix it with some new gas over time