Don't dwell too much on it. I don't think the average GW2 player cares about it at all. It's probably a matter of convenience and the fact that the subreddit will show up a lot on Google search results.

The best thing we can do is make sure there is an alternative, which is what we are trying to do here. This community will probably never be as big as the subreddit, but that is okay. We just need to be a viable alternative 😉