This is why OSS looks like a cult at times. People are allowed to criticize your project and complain about it. They have no obligation to become a contributor. "Submit a PR" is such a conversation killer.

A PR needs maintainer approval. And the maintainer I've seen thinks the documents are good enough already. In cases like that, a PR might not be able to solve the problem.

Complaining about it reroutes people to better projects, and pushes the project to fix the problem.

Your adversarialism isn't a good look. Users are allowed to have opinions, this does not mean they have maintain the work themselves.

I didn't use try Traefik's documentation, but the complains appear to be somewhat structural. Meaning a PR would need to possibly restructure at least part of the documentation, or add a whole section of documentation of a different type.

You can't expect someone not core to a project to just propose to restructure the whole documentation. Which may also mean changing the website.

And in any case, such overhaul coming from a "nobody" would very likely be rejected as being both too large or incomplete or not desirable.

Re-structuring needs to be pushed for by at least one person from the core team.

So yeah "Just submit a PR" in that context is not an answer, it's an excuse to avoid trying to understand the problem and actually improve the situation.

Customer: I can't find anything I'm looking for in your store.

Store: I spent a lot of time arranging things around in the store, if you can't find what you're looking for you can stop complaining and write signs for us.

Customer: Or I can just use your competitor who actually cares about their customers. ¯\_(ツ)_/¯