Backs them up with benchmarks. http://www.bit-tech.net/news/gaming/2016/09/26/titanfall-2-system-requirements/1
It's a reference to the original Titanfall, which did indeed have uncompressed audio because reasons. As for the CPU overhead for decompressing audio, depends on the codec - but as per my tongue-in-cheek reply upthread, for MP3 it's pretty negligible on modern (or even old) hardware. (Hell, I've got an MP3 player from China which cost me 80p delivered, and that manages it just fine...)
Damn, that's certainly how to announce spec requirements for any PC game...every major publisher/developer needs to see this. If there's any way to win over the PC crowd at the very least it is transparency (even if they made the beta console only for "reasons"...perhaps this was their way of apologising for that)
"an Nvidia GeForce GTX 660 2GB or AMD Radeon HD 7580 2GB or better" 7580? Or 7850? Anyway, stopping playing the pedant for a sec, Them's some high requirements. Got a 970 last year? You don't make recommended specs any more! They must've started the coding for this knowing, before the rest of the world, what the new hardware was capable of.