There is a difference between a discussion, being part of an integral quest for new knowledge and improve methods for survival. And drive by posting ones preestablished forgone strongly held beliefs.

It seems survival forums have evolved it voting with a five word "mini" sentence.
I think (then three words to complete the sentence)

Threads turn into high-speed voting. Which is of very little value.

It often appears there is no interest in learning, as everyone is a "master" of all aspects…

"Why" is there NO interest in discussions….?