True; I don't expect to see Wikidata updates on my watchlist, and had to enable them to follow up this issue. But what about the people who use mobile watchlist and expect and want to see Wikidata updates there? Can they be warned, and will enabling Wikidata watchlist items affect mobile as well as desktop?

Same behaviour observed on other pages with Wikidata updates; when they are clicked on the Android app Watchlist it displays the latest Wikipedia update instead.

Watchlist showing J R R Tolkien Wikidata update (second entry on screen), followed by