[rsync]

"San Francisco used to be an awesome place, then all those people moved in from some white-only places and it's pretty much gone down hill. It used to be an awesome, diverse place with strong and creative people... now look at it. It's so sterile and void of originality it is sickening in comparison to what it used to be."

I think you would do well (and perhaps be surprised/enlightened) to read about the population and racial makeup of the mission district (as an example) prior to the immediate post-WWII era.

Hint: there were no tacquerias.

Things change. Places evolve.

[massemphasis]

Are you confused, since you are confusing "evolution" with gentrification. San Francisco de-evolved.

To undo your over simplification, in terms of evolution San Francisco is over specialized in an evolutionary sense. Can you parse that and understand what that means?