As for the dramatically faster, the ripgrep author doesn't claim this. What he claims (and supports with benchmarks) is the obverse, that there are no other too

As for the dramatically faster, the ripgrep author doesn't claim this. What he claims (and supports with benchmarks) is the obverse, that there are no other tools dramatically faster than ripgrep. Basically the stated goal is to be "fancy" like ack etc. and yet remain as fast as good ole' grep.