Edwin,
If a person is dropping 25K on a projector then they obviously want the best video presentation. Why stop there by not investing some monies into achieving the best audio presentation?
i can answer that! Because modern receivers are quite adequate! Can you chase a fractional increase by going to separates? Absolutely and more power to you. But there’s a very specific and small percentage of people for whom that makes sense. Up till now I have not been one of those people. My receiver fed 7.1.4 setup beats all professional theaters besides IMAX and Dolby cinema and I’m quite satisfied with their power, accuracy and tone.
I’m a big boy and can take the teasing from those who advocate for separates but to make a generic statement that the only true theater sound is separate fed or that if you aren’t using separates you aren’t serious about your sound continues to be ludicrous. And antithetical to the HTF mission. It’s in the same boat as people pushing CIH. If that works for you great but it’s a CHOICE that doesn’t match up with the vast majority of HTs