Reporting to the law enforcement and removing a "number" are not mutually exclusive. But law enforcement has got their hands full with the more illegal stuff already. So leaving the not too difficult to detect - simple spam, scam and malware to the registrars and hosts to deal with - is not ridiculous.

I'm really sorry, but this infrastructure has functioned for more than two decades. It takes a massive amount of manhours daily to deal with abuse. How can you unironically defend and claim that a system that removes most punitive measures will be good or usable? Is it delusion or naivety?