“There are a very few LED headlight bulbs that do the point source thing correctly...”
A filament is not a point source either. A tighter beam can be had with a larger parabolic reflector but that would be a styling nightmare.
Well, a headlight bulb filament is close enough to a point source that it works pretty well, positioned and oriented properly. Modern low beams have very sharp upper cutoffs. Some of the latest aftermarket LED based bulbs have a pretty small effective source too, but I don’t know of any certified for halogen fixtures yet.