I'm going to take a leap and say it's not by typing reddit.com/r/binoculars or by using reddit search (which has been terrible since inception and shows no signs of improving).
I'd guess instead you use DuckDuckGo or more likely Google.
So what you say you really get from Reddit is a site that has a modicum of trustworthiness that it won't ruin your computer and that maybe there's an opinion here that reddit is the canonical place where all binocular enthusiasts will also participate.
Am I right in this assumption?
If I am, doesn't that completely break down the moment a decent chunk of communities decides it must not be on reddit?
As in, it's not really network effects, it's more "all or nothing" because anything other than everything brings doubt into the trustworthiness of the site/communities.
If there's a very popular and well known community (Linus Tech Tips for great example): then their forums are more trustworthy and have much richer densities of information. And you would find that information the same way as you would on reddit if I'm not mistaken.