I'd expect you to not grasp this one, sink, and you didn't disappoint. It is not libertarian to demand that the government provide some kind of probable cause to obtain phone records.
alot of governents now installing cameras in public spaces. does the government need a warrant to digitize the image of your face, taken from one of these public cameras, and store it in a database? does that violate the 4th amendment?
how about the IRS - does it violate the 4th amendment when it requires that financial institutions and employers send all of your transaction and earnings information to them?
you believe the 4th amendment is very broad - it isn't - its very narrow in fact.