Fair Source seems great and a really good move forward.
2 years is constant pressure on the creator to be innovative, maintained and secure. Then two years ~public domain compared to Disney's 95 years or patents 20 years.
GPL is somewhat broken, AGPL is so broken it's not fit for purpose, it's un-enforceable.
MIT is amazing, but people need money.
The only concern is if people start forking licenses and making it all a mess. MIT (or freer) matters, a short time period also matters. People need to stick together on one license.