I'd say you are inviting some flames with that remark.

It also could be that much of is discussed here is in areas that I can't
contribute so I stay out of it. Or of such a nubie level that I
would just drop in a condenscending remark, so I think
better of it and not post at all. It is rare that I will try to help a nubie since
it usually takes 10 exchanges to identify the level of understanding they
are at, which is just too damn exhausting for me. Or so far over my head
when mathematics is discussed that I'd be an idiot to try
to participate. Or in a language I don't understand.

So here we have a litany of reasons why you would get
very little participation in these type of discussions since they
are so detail focused, which excludes the majority of
people from being involved, even other "practical" programmers.

Reasonable explanation.