FISA does not trump the Fourth Amendment. Moreover, this controversy is about tracking the location of Americans in America, which is beyond the purview of FISA.

I don't think it is irrelevant at all. The problem though is that the court actually ruled officially in Jones on very narrow grounds which are inapplicable here. That 5 justices went further and said that general surveillance could reach 4th Amendment problems if large enough in scale, and that this would require rethinking existing precedent throws a real monkey wrench in things but it is premature to say the Supreme Court has ruled on this issue.

Yes, he made its amateurness clear, at length, in the opening paragraph.