I'm not sure that the term 'hater' is really appropriate here.
Cryptocurrencies have, as far as I have been able to tell, offered close to zero benefit to any society. The only groups I have come across promoting the either do it for ideological reasons (a very, very small minority), or for reasons purely of personal gain- the much larger majority, who treat it almost purely as a speculative gamble and seem to want others to enter in order to improve their odds of the gamble paying off.
It's still largely useless as a medium of exchange. The fundamental design of the best known one, Bitcoin in particular will guarantee that it's useless for consumer use (look at El Salvador).
On the other hand, it is massively computationally expensive- just Bitcoin by itself is more polluting than the entire country of Malaysia.
Should not the onus be on those who continually promote the idea of cryptocurrencies to demonstrate that there is significant social utility behind this idea, rather than simply calling sceptics 'haters'?