I used 22mm tires with high pressure in my criterium days; and I was a hard convert to lower pressure and wider tires... but now I like it a lot.
For me it's not about power output or road buzz, it just feels nicer and I feel more confident carving my line in the downhill hairpins of imperfect pavement I ride all the time.
I too am a convert to lower tire pressure because I appreciate the apparent increased ride comfort. What I don't like is when you get out of the saddle up a hill to put down more power and see the front tire. It seems to be deforming left then right with each stroke of the pedals. I know It's because I've got too much weight on just one tire but it's still unsettling. So I'm starting to inch that pressure back up. Tubulars are such a superior ride to clinchers no matter the pressure.