The whole fedcoin is like that.
Monero solved those issues a long time ago.
Discussion
btc core got stuck in the last century. it is ugly and outdated by 30 years or more.
now the programming monkeys fight each other over child porn vs deleting old blocks. who puts the most retarded and most communist code writers there?
monero is modern, provides privacy and speed. it is not free of challenges like any other project but those 30% monetary attack issues pale in comparison.