Tested a few different cases more, seems all to be working well!

wb_terms_entity_id only uses the "old", numeric-only term_entity_id column, hence it probably has been kind of replaced by term_full_entity index.

@Lydia_Pintscher: could you update the change description to state what is wanted here? It looks that what the comment above T191416#4485854 says is quite different from what the original description did.
When the description is updated, it would be good to have clearly stated what is the expected to be done here (acceptance criteria), as apparently the topic is quite broad in general.

Could this be related to Wikidata-Ugly-Cat-Trailblaze (wb_terms trail blazing)

random comment, re accessibility https://www.w3.org/WAI/standards-guidelines/wcag/faq/#othertechs might be of relevance

Partially-ready proof of concept: https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/Wikibase/+/457932/

Thanks @GoranSMilovanovic!
I've tinkered a quick script based on @Addshore's previous work which seems good enough for current needs. When (or if) we actually take this indicator on as actual WMDE indicator, we'll probably turn it into something more appropriate. It could be that I'll get back to you then :)

triggered by @Lydia_Pintscher's comment, I did some digging and found the fork of @johl It seem to have one commit ahead of the upstream with language changes: https://github.com/johl/wikibase-docker-yml-gui
It has not been made a PR to upstream, neither we've heard any information whether this work at fork is considered done, WIP, etc, so it is difficult to do more than guessing.
Would be the best if the man himself has spoken :)

Any of these

"wikibase-lexeme"

Thanks for the ping @Umherirrender.
From my personal perspective, I share @Jdlrobson's view. Thanks for neatly summarizing this, in the other ticket I failed to get to the point that nicely.

https://www.wikidata.org/w/index.php?title=Wikidata%3AStable_Interface_Policy&type=revision&diff=741948123&oldid=716051185

So final text: