Yep. Most product groups still have individual offices with doors, though new hires are usually doubled with someone else until they have a couple years' tenure. There has been a recent migration toward team rooms in a few high-profile groups. Meaning ~12 people together in a bigger room, as opposed to "open plan" with dozens or hundreds in one huge space.

Yes, well, I'm pretty sure those advertisements were back from when Bill Gates was running things, or not long after and well before very slow clock cycle things like real estate could have changed.

Since then, no particular bit of insanity from Microsoft would surprise us....