I really agree with most of your feelings Troy, and you uncovered some of the subtleties of how this place, and others like it, work.
I understand there has to be a balance between folks speaking out of their butts on subjects they may know nothing about, and actual professionals who have a lifetime of experience behind them.
My post is more directed to those folks that would rather type "get a teacher" than actually answer the question. Experience or no experience, i see that as a fairly useless answer that maybe shouldnt had been typed out at all and kind of deflects newer posters.
But you talk about the old posters not bothering to stop by anymore. That would point out a fundamental flaw that might not be able to be fixed. If no new users are coming to take their place then yes, this forum will die or get close to it if there is a downward trend is users.
I define forums like this, usually, as a place for just about anyone to log on, ask questions, and make comments, no matter who they are. The only rules being to stay on topic, and be respectful to each other. If you all are striving for something more than that, know it will be creating somewhat of a barrier to entry for new users.
I'm glad we're finding common ground. One of the challenges here that I think is somewhat unique to world of TBDB is that we have a sister site for EBG players. Not that there's anything wrong with EBG. I have one and I love to play it, though increasingly these days, no one will let me. Without knowing the stats, I would guess that in this forum alone the ratio is at least 100:1, maybe higher. EBGist seem to think that they understand the doublebass. I'll cop to the fact that I felt the same way back when and got a rude awakening when I actually started my process as an adult.
When you get questions about "Painting fret lines on the fingerboard until you learn to play in tune." The right answer is "you need a teacher." That may not be the answer that you want to hear. It doesn't resonate with people who are self taught BGists, I get that, but it's still the right answer. 90% of the time when someone encourages "fret lines" and I click on their profile, I see a list of BGs that they own listed under gear and no DBs. I can tell you that it is very humbling after being a respected bass guitarist for 20 years to go to a teacher and start as a beginner. Very humbling. But, for me it was necessary and the time I spend avoiding it was time wasted. If you have a technique question, short of having a teacher work with you, you want someone like Ed Fuqua or Eric Hochberg to answer your question. If they have to shout over those other voices, their only going to do it for so long.
I am an active participant in a photography forum and some of same cultural things exist there as in all forums, but not that. That's fairly unique to us, I think. Doublebass and Bass Guitar are different instruments. The instruments are different physically, the mechanics of playing them are completely different. I didn't want that to be true when I was a bass guitarist dreaming of playing upright, but that's not the deciding factor in these things. It is what it is.
I'm not a well seasoned, pro-heavy-hitter on this instrument, but I've been fairly dedicated to it for well over a decade now and these guys and some local guys and a few great teachers helped me. Anyone telling me not to listen to them was working against my progress. I understand how you feel about our collective shortness on these points and you're right, we're not always in balance, but what would you like for us to do? Comes back to my 3 options really. I still can't think of a 4th, that doesn't involve some structural controls on content, which we may see in the form of wikis and new forum software. But still people are going to have to be willing to work with it.
Our best advice to a lot of questions is "get a teacher", "find a luthier", "don't try to make it a giant vertical BG", "buy or rent a serviceable instrument" and "don't take advice from someone who doesn't play." There are lots of other things we could be talking about, if we can just get past those. If we can't, then we're just stuck in a kind of purgatory and it loses value to everyone.