Have you heard about DAO hack in Ethereum back in 2016, which then led to hard-fork, and split to "Ethereum" which returned hacked funds by altering blockchain, and "Ethereum Classic" that maintained the original one?
Long story short: Shitcoins are centralised, bitcoin is not. That centralisation would kill most of them in decade or two at worst.
Have you heard about DAO hack in Ethereum back in 2016, which then led to hard-fork, and split to "Ethereum" which returned hacked funds by altering blockchain, and "Ethereum Classic" that maintained the original one?
Long story short: Shitcoins are centralised, bitcoin is not. That centralisation would kill most of them in decade or two at worst.