1. He calls it a warrant, which is the first sign that he's a fucking idiot. It's a subpoena not a warrant.
Subpoena
A subpoena is applicable in criminal and civil cases. For civil cases, the focus is put on gathering information at the discovery phase of a case and an attorney can issue it. Usually, a judge issues a subpoena in a civil case to persons who are not parties of the case. Whereas, criminal cases demand the issuance of pre-trial information and the appearance of a witness during a trial. It should be hand delivered by a process server, sheriff, or anyone over 18 years.
Warrant
A warrant is issued by a judge only if the request meets the probable cause standard. The probable cause of necessitates evidence and not any type of suspicion. Law enforcers are required to deliver personally a seizure or a search warrant as they execute it. If an arrest is to be done, an arrest warrant should be issued before or after the arrest.
2. The host cannot get in trouble for this post, there is a law which cannot hold hosts responsible for their content.
"On February 8th, 1996, the following twenty-six words of 47 U.S.C. § 230(c)(1) came into effect:
No provider or user of an interactive computer service shall be treated as the publisher or speaker of any information provided by another information content provider."
