Don't be a part of the problem. That's a solution.
Nonsense. The "please stop" approach only works when you have authority.
Nope.
People discuss what's the best all the time. Reasonable people derive their conclusions from such discussions. Other people can't produce results anyway.
I'm just trying to get cryptocoin supporters to join forces except of cannibalizing itself.
"I don't trust people to act in their own best interest. Instead of trying to understand their reasoning, I'll use disrespectful terms for their decision, like "cannibalizing," to try to pressure them to do what I think they should be doing."
Disrespecting the market? Wow, that's really bad...
The word "cannibalizing" is very appropriate there, regardless of whether s/he's right or wrong.