There is a HUGE difference between the two positions.
Accessing meta data with a warrant, after satisfying a judge that the applicant has reasonable grounds to believe an offence has been committed and that, in all the circumstances a warrant is justified to allow the proposed intrusion, is very different to having open slather to search for these things because it might assist you to collect evidence in a fishing expedition.
This stuff was all about terrorism at the start and look where it seems to be heading now. If we sit back and apathetically allow each new incursion into our basic rights, we will end up with a national socialist form of government. Your vote is your only weapon but you need to use it NOW.
Kaz