Personally I have mixed feelings about this change as well:
I like how it's far more noticeable that the author has not confirmed that this mod is supposed to work on a given version...
I don't like the phrasing "for outdated Vintage Story ..." as I feel this will be easily misunderstood as "this mod is only for outdated game versions" while in reality mods often survive game versions (especially when we talk about minor versions)
I'd opt for something along the lines of: "Warning: Author has not confirmed this mod is supposed to work for game versions beyond ...."