The population growth is largely due to rich foreigners moving into the city:
"I was born and raised in Barcelona, no longer live there however. I didn't remember how bad it was until I went to visit my family last summer. Me and some friends went to walk around the center and the girl that took our orders at a Pans&Company didn't even know Spanish or Catalan, only English. It was honestly quite depressing. She was surprised we didn't open the conversation with English."
https://www.reddit.com/r/askspain/comments/1833ub1/comment/k...
https://www.thestar.com.my/lifestyle/travel/2023/10/09/fed-u...
People say that it has become difficult to hear Catalan or Spanish being spoken in the city center and there are waitresses who don't know Spanish. Some started to say that this is not a case of gentrification, but a colonization.
I've lived here for more than a decade, I'm not native Catalan or Spanish and never experienced any xenophobia from anyone here.