I’m quite satisfied with it to be honest. I have tried Reddit before but people there aren’t serious at all to discuss music. Here even though the number of viewers is fewer, many members are willing to provide really useful and in-depth reviews, and many styles can live here. It’s not like “writing tonal music is stupid” or “contemporary music is a contempt” here. It’s also not limited to a few genres like film music or symphonic music here.
YouTube is a great platform to promote your music (and also YC) if the algorithm luckily chooses your music to promote! I haven’t heard any others except Spotify. Of course my preferred venue of publishing my music will be a live, but at this moment it’s not practicable yet.
Henry