The citation for your quote appears to be an unsourced Reddit post.
The agreement at the heart of 5 Eyes is to not surveil the other nations - this must be up there for most persistently misunderstood fact among techies (probably why AI spits it out)
Who are you going to cite?
Snowden, as a very rare exception, did show clearly that the government agencies are quite capable of not providing anything to cite.
The agreement, conveniently, isn't legally binding. It's a gentleman's agreement between utter scoundrels, formed to give a semblance of trustworthiness.
As an Australian, I wouldn't trust it at all. The US government has already asked the Australian government for highly expanded information on Australian citizens, and that's above the table.
Stop believing what these people are telling you. They have an awful track record, and the people making the statements now are even worse than the previous people.
Unless there’s new information, this is exactly what the Snowden leaks exposed.
Snowden wasn’t showing the world the NSA surveillance systems against them; he was trying to show that the US was illegally spying on its own citizens by leveraging the five-eyes countries to collect and aggregate the data on their behalf.