I have. What I took from that thread was "the more information you
provide, the more likely it is that ops will be able to contact you if
your bot is causing problems" and "there should definitely be some way
to contact the person running the bot, whether via talk page for a
logged-in bot or via email or similar." Is that accurate?

If so, there's still ambiguity in the "more information is probably
better" and it would still be useful to know how much is enough.

** For large frameworks like pywikibot, there are so many users that just "pywikibot" is likely to be somewhat vague. Including detail about the specific task/script/etc would be a good idea, even if that detail is opaque to anyone besides the operator.

* Some way to identify how to contact the operator, without relying on other headers in the request (e.g. the login cookies). This could be a reference to a userpage on the local wiki, a userpage on a related wiki using interwiki linking syntax, a URI for a relevant external website, an email address, etc.