The world only needs one base layer of money. Shitcoins are counterfeit.
"Fragmentation means that (...) [Bitcoin] cannot fulfil the social role of money. Ultimately, money is a coordination device that facilitates economic exchange. It can only do so if there are network effects: as more users use one type of money, it becomes more attractive for others to use it." (Bank for International Settlements) https://www.bis.org/publ/bisbull56.pdf