I come in here and try to relate the things I'm learning from my practice, share ideas and some BS...
My take on it, is that as the newer students of piano cover ground they're learning the same things every previous 'generation' has... Then talking about it. The topics I once read about take on a new interest as I begin to actually apply it. There are always new faces asking questions, so I see nothing wrong with repeating my personal take on the time-worn topics with what bit of experience I have to work with... It's a cycle.
...Or we could just link to old discussions, maybe reply to every question with 'do a search'.