"Find it interesting that the Orlando killings were used to justify this. "
A data fetishist will use any crime to call for more snooping powers and less oversight regardless of the human tragedy or any signs it would not have made a blind bit of difference.
The real drivers for this are twofold.
1) Because we can. The cost of data storage and voice and text analysis is low enough the hard ware can do it and we (the data fetishists) want to. More data is always better data because of
2) In the words of Cardinal Richelieu "Give me 6 lines from an honest man and I'll find something with which to hang him."
These powers give those who want them so many more lines to read, and hence "crimes" to charge people with.