According to Coinmarketcap we have 2085 cryptocurrencies so it means Wikipedia only knows few 1600 coins over 2085 coins. However, every month there are new project releases so more cryptos will come.
but do we really need more cryptocurrencies?
Honestly, for me, we don't need more cryptos but they are mostly using it for trading purposes.
Do we need new cryptocurrencies for every project that exists?
Well, sometimes there are some coins have unique features that the other doesn't have
Why can't there be one or five cryptocurrencies that all projects can use?
Well, it depends on us if we use only one or five cryptos but since there are many competitors and each of them has their own unique features that the other doesn't have they are still trying to keep making a new project just to fulfill investors needs and to replace bitcoin.