OK, no more speculating on my part. Lets look at the real story of exactly what Paul said...
For years he happily used a Direct stream DAC straight to amp because it sounded better without a preamp. Arnie had him listen to his 'Aesthetix Calypso' preamp. ($5000/7000) Paul agreed it was better.
Paul then went home and plugged in the best preamp PS Audio made and it sound WORSE! Why??? Arnie told him the reason it was worse was " You're not using a good enough preamp".
At that time they were using the Aesthetix in the main listening room. Arnie said..."Ya know, probably doesn't make sense to be using someone else preamp. Ya outta just make your own."
Paul set out and developed(with the late Bascom King) the BHK series ($7000)to be as good as the Aesthetix.
Paul summarized very clealy..." if you're not able to afford something as good as a BHK preamp($7000)DO NOT put a lesser preamp between the DAC and the amp. Go direct DAC to AMP" "it will sound BETTER".
I don't interpret this as Paul being an advocate for preamps, I see it as being an advocate for high end preamps ONLY. If you don't have the money (which some people can't afford) then avoid the preamp and going direct will sound better.
His words...not mine.