I think that the creation of new cryptocurrencies is not illegal
Its not illegal if your on a crypto accepted country but to those that bans it , you could be in great danger if you insist to do so but who will know if you create one ? You will only be in danger if your creation spreads out .
real cryptocurrencies are not regulated in this case either. Therefore, this system is still new and no one has the right to accuse anyone of a crime.
No matter how old the crypto get , they are still remain to be unregulated except to some that are fully centralized cryptos . anyone have the right to make a law to ban or unban a crypto and its already happening on some countries