because with thousands of projects in the past that died

The number of cryptocurrencies in existence varies, but there are likely tens of thousands:
Estimates: Some estimates say there are over 9,000 cryptocurrencies, while others say there are over 20,000 or even more than 2.4 million.
Activity: Many cryptocurrencies are inactive or discontinued.
Relevance: Many cryptocurrencies may not be particularly relevant.
Purpose: Many new cryptocurrencies have little purpose other than making money for their developers.
Growth rate: The number of cryptocurrencies has grown rapidly, increasing fivefold since 2021.
Source: https://www.google.com/search?q=how+many+crypto+coins+exist