That's like saying forging a plea from a Nigerian prince is trivial. Verizon should be deeply embarrassed by this - I mean the initial request came from a proton account with misspellings and grammar mistakes of a child.
I don't know how Verizon does it, but I have a friend who works in the "respond-to-law-enforcement department" at one of the FAANGs. Given the company, they get tons of legal requests for info, but also tons of fraudulent ones, not to mention ones from real governmental organizations but that are dubious that they challenge. Point being they have extremely detailed processes and technology to respond to these requests. Verizon is the biggest cell phone company in the US, they can afford to not look like a total clown show in this regard.