So, since this is the lore channel, I think these kind of posts are allowed? If not, that's unfortunate.
Anyway, for the topic, Cropsford made its first appearance in the franchise in TES IV: Oblivion, set in the Third Era, way after the events of ESO. Some people claim that for this reason, ESO's appearance of Cropsford is lore-breaking.
I think this reasoning is poor. For example, in TES V: Skyrim, both the towns of Rorikstead and Riverwood would be lorebreaking if we use that same logic. Riverwood appeared in TES: Arena, set in the Third Era, yet Riverwood is said to have been built a few generations ago from 4E 201, which is in no way during the Third Era. Rorikstead is said to have been constructed by Rorik after the Great War of 4E 171, yet it also existed during previous eras, as is proven in ''Holdings of Jarl Gjalund'' in TES V.
For this reason, I personally believe that Cropsford appearing in ESO is not lorebreaking. Rather, it shows that Cropsford existed in the Second Era, got destroyed for whatever reason, and then rebuilt in the Third. This would also explain why some other towns (such as Vlastarus) did not appear at a later point in history, because they were simply destroyed and never rebuilt.
Does this sound reasonable?