In demographic and vibe, sure, but the built environment is very much the same. The city was even _downzoned_ in 1978 [1] to keep single family homes at the end of their life from being demolished and rebuilt into denser apartments: 76% of the city would be rezoned as single family home only.
SF has changed quite substantially just from the late 90s which is the time I've been around the area.
If you find some 60s hippies to interview they'll recount even more change from those decades.