TBH - I don't agree AT ALL. My DS was the worst sleeper and sufferer of colic/reflux/whatever.
He was feeding every 90 mins, it nearly killed me. On advice from the hotline and they suggested we keep him off the boob for awhile. We gave him a dummy and DH rocked him for 7 HOURS. He burped and farted like a trooper and it broke the feed/pain/feed/pain cycle. I believe frequent feeding DOES help but it is only temporary. The sucking does soothe them, but them constant food confuses their tummies.

This is totally my opinion, I have done the hard yards and beleive all babies are diffrent. When DS got narky and uncomfortable we would stretch the feeds out until 3 hours (it was hard sometimes) but it was the only way to get his tummy a break.