The consensus here seems to always be leave in SDR and use match content, but I’ve had no issues with leaving Dolby Vision on all the time. SDR content like youtube and TV shows that were never mastered in HDR look 100% fine to me. Part of the Dolby Vision spec is that it forces your TV into it’s most color accurate settings so why wouldn’t I want that as well? Using an LG C2 by the way.
i leave dolby vision on all the time and haven’t noticed any issues with sdr content. my lg c2 handles it well, and the color accuracy is a plus for me. plus, i don’t really notice a difference in sdr vs hdr wrapper for the content i watch.