The author is confused. See this discussion on HN where a lawyer or two explain what is actually going on.
Basically, nothing is changing concerning the substantive requirements for a warrant. All that is changing is which judges can issue a warrant after the police have satisfied all the requirements of the Constitution and of the Federal Rules of Criminal Procedure. Suppose a crime took place in district X, using a computer in district Y. Before, the police would have to go to a judge in district Y. After the change, they will be able to go to a judge in district X if and only if something like TOR or VPN was used that prevents them from determining Y.