> For me it's good to fix things as soon as possible.

The problem here is that you are attempting to push a change through a PR without providing the other core developers with important information. You should at least have given a reference to issue 29040 and explain why you think it is safe to push this change now and not wait for the decision to switch to r14 and you should have done it *before* publishing the PR. By behaving this way, you may lead other core developers to think that you cannot be trusted.

> If you think issues on beta should be postponed until the final release, I can keep my patches locally and submit them later.

Yes, please do. Note that this issue is closed for now anyway.
Also when you are running Python on Android and publishing some results on bpo (such as for example in issue 29176) please make sure that Python has been built with r13.