The size of the villages/number of buildings and building "type" (I mean as what is a "home" and a "workshop" and so forth) doesn't mean anything. I mean that literally, it never does in video games, and BG3 is not an exception. They should not be thought of as trying to depict the entirety of a village or town, more the spirit of it. Look at the Moonhaven village for another BG3 example. It has an apotechary, a smith, a school, and a mill, and one barn/warehouse outside of it. The three first could be assumed to also house the owners of them. The mill, however, doesn't even have a house for the miller. And there is a complete lack of farms and fields who would actually go to that mill or need the services of a blacksmith. No other inhabitant's dwellings. Where did the children that went to the school live? And so forth.
It's not a direct, realistic depiction. It's the same in 99.9% of all games, but particularly open world games, since with them you can't handwave the missing parts as being off-screen. But, still, it's just scenery. And like scenery on a theatre stage is only built on the side facing the audience, because that is what is relevant, we only get to see what is relevant and have to extrapolate the rest on our own.
