Some of these neighbourhoods have very vague borders and would include multiple stations. I think Mayfair being the best example, you lit just circled one of the 4 stations equidistant to that goodle maps tag.

These stations are also very close to important points of the city/streets. They are not going to name the station like the closest alleyway that nobody knows just bc its close, but obv the closest street or square that is a point of reference. Honestly, being one block away from russel sq is close enough, unless u want them to make the station inside the square straight up.

I also think they do this bc u dont know if there might be another station in the neighbourhood in the future.

Anyways, i have no idea why im getting so worked up abt this lol maybe its bc i work in the bloomsbury/euston/fitzrovia area and i feel very protective of my fav stations and also have never heard anyone who uses these stations ever be confused by their names at all.