Very interesting, Zen
I hadn't heard of Lactate Buufers - but I tend to agree with them.

Lactate supplements are a great idea in principle. Unfortunately the claims are not supported by science—in fact in this case, we believe the available science on lactic acid formation and removal rejects the claims put out by the manufacturers.

At best, we can see the possibility of a placebo effect causing users of these lactate buffers to see improvements in their performances. And, we realize there’s no denying the power of positive thinking (i.e., “If it says I’ll go faster, I will go faster.”).

Without some kind've scientific rigour, I would be dubious.
If it was that easy wouldn't the pros be using and endorsing? (And then it would probably be added to the banned substances list anyways)

I think I'll stick with a couple of intense rides a week to lift my LT, and gentle spins to disperse the lactic acid....