Originally Posted by
glye
Yes. (For single chainrings it is easier and cheaper to use chainring spacers, and keep the Q as it is.) But for 1x11 or 1x12 with wide mtb cassettes and a reasonably sized chainweel, the frame makes it impossible to get a good chainline, at least on my 2018 R&M Birdy it is. So anyone thinking about that kind of setup should consider if they will be happy with the noise and wear you get from a bad chainline.
You seem happy with your setup, so I'm wondering if you have a Pacific Birdy? Maybe they have redesigned the frame to give it better clearance.
Actually, mine is a Bianchi Fretta, which is a version of the Birdy sold here in Japan, it is likely that the newer versions have been redesigned since mine was produced. I only have any noticeable noise when I am using the 36 tooth cog on the cassette, it is quiet in the other gears.