Specialists are making that claim: the dangers start at the first glass. It's not a conspiracy theory. Google a bit and you can find a few decent studies.
I'd also add that alcohol definitely bothers people, maybe not just you.
I've soon been sober for a year, and I was on a very destructive path. Would never have kept at it without that sub.
Here's how it helped me:
1. In the beginning I was hurting and feeling really isolated - posting semi-regular helped me vent and people with more sobriety under their belt gave support directly.
2. When I've been to occasions (weddings, birthday parties) that include drinking, I've been able to jump into the chat and find instant support telling me to not have the first drink.
3. There's a daily check-in where you post to pledge today's sobriety. In the beginning I pledged each day.
4. I have a badge by my name that keeps track of each day I've been sober. Having to reset that to zero is more motivating than you might believe at first.
5. I now comment on other users posts, trying to keep their mood up and push them to not drink by giving them support.
Also, the community and mods are superb, kind people.
I'd also add that alcohol definitely bothers people, maybe not just you.