Chihuahuas are intense and there is breed prejudice but I'm glad you found us. I have always wanted a chi but was ridiculed and shot down every time I even mentioned it so Laurel is my first and I am a "little old lady" now.
She isn't barky so I'll let someone else help you with the specific issue, I just wanted to reassure you that you most likely have only met Chihuhuas who weren't properly cared for, since some people get them for the wrong reasons the same way some people get pitties for the wrong reasons, and that never goes well.
I was also shocked that I was able to find Laurel (I'm rural) and afford her rehoming fee (I'm poor) so I think they have become more popular lately. I'm up for the breed prejudice because I was all set to bring a pittie home until I found Laurel and managed to scrape up enough cash to help her breeder out a BIT with expenses.
Don't forget to use the search feature. The internet is kind of yukky everywhere right now, but there is a lot of good information here from when it was active and fun and exciting. I see eleven pages with the keyword "barking".
Laurel: born 9/1/18, 7 lbs, my homegrown
Chocolate: born 10/4/18, 9.5 lbs, rescued from DV situation