The thing is, it doesn't. It requires the device to be able to do a Digital to Analog conversion. In modern graphics chipsets, that capability is only needed for legacy compatibility with CRTs and old projectors. If you speak VGA to a projector or any flat panel monitor, you're really just feeding an Analog to Digital converter. It's nuts.

VGA has lower quality at high resolutions than something like DVI, DisplayPort, or HDMI. Then again, if the place still has a VGA connector, it's unlikely the projector is high-resolution.

Yes. So as a guest do you make the best of it or whine that there are better things available?

Being a good host is also kind of a thing, FYI, and part of that is going to the effort of making life nice for your guest.

If you're going to harp on hospitality, please remember it cuts both ways.

This is the rudest politeness advice I've ever seen. Props!