I am an adult beginner on the violin and would just like to say I've absolutely loved it so far. I started at the very beginning of this year and found a teacher who I'm extremely happy with. Around three months into playing they had me start on Melodious Double Stops. Just recently, around five months in, someone commented that it seemed very early to be playing double stops. I also noticed that this sequence of violin repertoire suggests Trott around Suzuki book six, and I'm squeaking my way through two, so it does seem I started early.
This seems strange to me. The first handful of etudes all use one open string and stick to first position so they definitely seem playable to me though I'm sure they'll sound rough from a beginner. "Sounds bad" seems like a bad rationale though. It has helped me a lot with intonation to reference an open string and this seems especially important when you're just beginning.
Is there any particular reason that starting double stops later seems to be the norm? Why would you wait six suzuki books to start?