Slashdot used to be full of field experts discussing ideas and tech, you could see discusions on there from genuine industry and academic luminaries. Most of them have long since left as it devolved into negativity, trolling and fanboyism.

I stopped going there when it became obvious the the first posts on many topics were no longer genuine. Not only were the subject-matter experts gone, but the 'discussion' was being led by paid reputation managers who had prepared statements on various things.

Slashdot is dead so far as I'm concerned.