I think people believe Dirac improves SINAD. To me, Dirac gets you the most out of what you have but it doesn't increase what you started with.
Most people don't know what SINAD is or what it relates to in hearing.
But you are correct that people do confuse "Dirac makes it sound better" with "it makes your equipment/content better". Nevertheless, that is more audibly persuasive than when a measurement like SINAD doesn't translate easily into what they are hearing (or not hearing) even without Dirac and even when SINAD is meh. NAD is obviously counting on it.
It is clear, if it sounds so good it is that Dirac must do his job very well, because the performance of the avr is bad, and the latter is what has been put into evidence.
Its a couple things. I dont believe the difference in SINAD from the best measuring AVR to the T778 is audible. Even if it were, it would be incredibly difficult to hear and the better room correction of the T778 would have a much bigger impact than 10 points higher on the SINAD scale from where it already is.
No one is saying Dirac makes SINAD better. What is being said is that in the case of the T778, the impact Dirac has results in a listening experience that is excellent and much better than this comment section would have you believe.
Im not sure why this seems so ridiculous. You guys actually think the difference in the SINAD score has a bigger impact on what you hear than proper room correction?
Of course I would like to see the T778 measure better but that product doesn't exist right now and I'm not going to settle for another AVR that does not give me as much of what I want just because its SINAD rating on ASR.com is higher.
The T778 sounds great IN SPITE OF what is deemed here to be mediocre measurements. Dirac is obviously a big reason for that. I don't understand what is so unbelievable about that.