/r/CryptoCurrency/ is such a weird place, you can't really expect to have any sort of serious discussion there.
When you look at that sub, it seems as though it's full of children. Some of the comments are just atrocious.
Did have some some pretty good discussions over on Steemit, they have quite a lot of active Discord groups that are tied to particular groups.
That sub is full of bagholders of various shitcoins who never miss a chance to shill for their coin. Or maybe that's just paid shills, altcoin marketers will do anything to pump their projects.
Also, what people on that sub have in common is their hatred towards Bitcoin, they all dream that it will die and their shitcoin will become number one, lol.
If I want to read some discussions about altcoins, I usually check Medium or Twitter.