This is what i call BULLCRAP

[Jojoya]

Put more than a few houses next to each other and people lose their mind

Of course.

One might argue that the obvious multi-house owners are doing it for the attention and notoriety it brings since they use the same FC tag and the themed FC names to make it obvious it's the same owner(s) for all.

Someone who actually enjoys owning multiple houses and isn't interested in the attention would use very different FC tags so they go unnoticed.