As a 2018 AL8 owner, maybe I'm extra qualified to comment.
(but having checked the thread on SVrider, I've no idea what they're on about).
There again, like Craig above I've got a slightly fruity pipe.
Reminds me of when I bought my last DR350, though in that case the stupidly loud straight through exhaust WASN'T enough to drown out the worryingly noisy valve train (needless to say the selling price was cheap, though as it turned out still not cheap enough
)