I'm having a hard time finding articles, any articles about the evolution of pop music since 2000.

I'm going to suggest you look at web sites like the following (found via Google) and narrow the search down:

Then, enter more specific key words into the Music Index, limiting by date, full text, and scholarly articles.

A Love Letter To The ’00s

If there’s one lesson to take away from the music of the 2000s, it’s that more is more. Music contributor Luke McCarthy looks back on the decade that brought us emo theatrics; the cultural phenomena of indie music; and the arrival of Queen Bey.

https://www.mtv.com.au/news/cm4gok/2000s-music-trends-genres-popular-culture-reviewed-punk-pop-emo

WIkipedia: 2000s in music

https://en.wikipedia.org/wiki/2000s_in_music