There isn't really, the majority of people in the channels are newcomers, it scrolls too fast for you to really see much, and once you subscribe you move to private and only see your own messages anyway.
I have no idea why they went to Discord, it hasn't provided any benefit to me personally, at least.
True enough. I totally agree with you. without Discord if it will be normal web portal it will be very nice.
They have show and tell and prompt training channels. If you only hang out in the newbies channel then yes, it will be newbies.