[jefftk]

The blog post you link has a bunch of alternatives, but I agree they're not great. If there are a lot of webmasters who want to be able to noindex through robots.txt then making the case for adding noindex to the standard would be a good next step.

(Still speaking only for myself)

[ademarre]

Googlebot actually used to support a noindex rule in robots.txt, but they are removing it.

https://webmasters.googleblog.com/2019/07/a-note-on-unsuppor...

[jefftk]

Yes, that was linked above. It looks like this is part of reducing support to what's in the spec?

[ademarre]

Oops, yep. I didn't see that context.