What do you mean by "stable"?

@He7d3r sorry for using internal lingo it means on for everyone (not just beta users). I'll reword the title now.

Thanks! Will it still allow users to disable the feature if they don't think it is useful for them?

@He7d3r I was thinking that because it is at the very bottom of the page, there would not be a need to opt out--it is not getting in anybody's way. The principle here is that unless it is potentially getting in the way of someone's workflow, we are simply adding another setting to an already long list that our users find overwhelming. There is another reason not to add an extra visual setting--the more layout consistency we have on the site, the easier it is to design and build further improvements. Obviously any user can edit their personal .js or .css file, but they do so knowing that the experience is not supported.

This feature seems useless for me. There is already a "see also" section in the articles, and there are categories and wikilinks...

Not sure if this is the right place to report issues, but the related articles list is also displayed at the bottom of "diff" pages which is quite useless (and distracting).

Thanks.

In T122260#1904543, @Cpt.a.haddock wrote:

Not sure if this is the right place to report issues

@Cpt.a.haddock: Thanks for bringing this up. Please file a separate task for separate issues. Thanks for your help!

Please read :w:de:Wikipedia:Themenring. This extension must be deactivated for DE:WP ASAP.

@Matthiasb: Thanks for the heads-up about the specific de.wp rules at :w:de:Wikipedia:Themenring which you also brought up in https://www.mediawiki.org/wiki/Topic:Sycbyy6c0mt7zpwj .
As per https://www.mediawiki.org/wiki/Reading/Web/Projects/Related_pages#Timeline_Estimate (linked from https://de.wikipedia.org/wiki/Spezial:Einstellungen#mw-prefsection-betafeatures ), my understanding is that the Reading team will discuss and engage with communities before this feature might be made available to more users (currently it is a Beta feature and hence requires explicit opt-in).

I just left a note at https://meta.wikimedia.org/wiki/Talk:Requests_for_comment/Related_Pages#Community_support. I'm very curious whether any Wikimedia wiki community or reader has ever asked for this type of functionality.

This feature has every appearance of following the same anti-pattern as failed projects before it, including Gather and UserProfile. Already a number of users have complained about this feature, both in Phabricator Maniphest and on mediawiki.org, and the response has been lackluster and tone-deaf.