Thing is, I have tried doing that kind of fence-setting with other online communities as well -- two that I can think of -- and the result in both cases was that I ended up just leaving, quietly and permanently.
Because when you don't have a deep personal connection with those involved (and especially when others there seem to share a connection that you don't), "participating sparingly" just exacerbates the problem that caused you disappointment in the first place.
And in fact, this was how I phased out of church attendance as well.