It’s about demonstrating via the diligence that you are a good steward of a fork. This is a requirement of any fork for it to take and be stable.

I understand it is an ideological project. My point is that given their intent, there are things they should do to make their case. They should provide the evidence in the README etc.

If they are correct and things must be done, they aren’t providing the evidence. That’s not the same as saying there’s no evidence or reason to take this stance. Do you see the distinction I am making?

The issue with that stance, practically speaking, is that anyone could have hand-submitted generated code at any time, so why this January cutoff date?

I would expect a decrease in code quality in a specific part of the repo or at least a quote/link to a changelog stating that generated code is being used as part of the fork making its case.

It would be nice if specific offending portions of the codebase were highlighted. As of now, it’s hard to see why one should use this fork. Also, since the source is available, anyone can just compile a past version of vim.