This page move did not trigger a sitelink change, although the user is active on Wikidata (and already was "successful" in moving another sitelink).
The special circumstance about this move is that the target page existed as well, so the move deleted it. (I suspected that the deleted disambiguation page had been connected to another item, so that there could be a conflict but the user's deleted contributions don't have an entry for the page, so it likely wasn't.)