I really dislike this kind of analysis, which looks at the one-dimension of proportionality of the vote as representative of preference shifts. I think you also need to look at total votes and comparison to prior votes to determine whether there is a real preference shift, especially given that Trump will end up with about the same number of popular votes as he received before.
https://www.washingtonpost.com/politics/2024/11/06/trump-big-cities-popular-vote/