This being a photography forum, I would have expected that the only subjects allowable would be violins and off road vehicles ...
Otherwise, why? I don't need praise from strangers on the internet.
I am one of those people who believes advice is like respect, it needs to be earned. Don't tell me how to drive if you don't have a license, don't tell me how to parent if you don't have kids. So I do believe that while posting photos may not be necessary, it certainly goes a long way (literally worth a thousand words) to showing how good of a photographer one is and therefore "if" one who should be listened too.
You just proved my point. Being a scientist has nothing to do with being a parent. Study all you want, there is no substitute for actual experience. So in that example, the crack head has more real word tested advice. Regardless, that has nothing to do with the question at hand, which boils down to proof.Well, my advice to you is to not confuse experience with expertise.
e.g. a childless scientist may have spent her entire lifetime studying parenting vs. a meth-head who has had kids may not give good advice
to your last point: many top photographers will not post on forums as it dilutes their exhibits or other professional work - but they might give you advice