US annual population growth is about 0.5%. So per capita GDP not counting data centers went down.

Yes, and GDP per capita with them went up. And removing a source of GDP that has been shrinking might make GDP growth look even higher. What does it tell us? Anything?

I think this year the population actually goes down. So per capita GDP growth is even bigger than 0,1%!

That's what has been happening in the UK for several years.

GDP per capita is more important than overall GDP to see the trend in prosperity, IMHO.