Just because some people have made inaccurate statements regarding acid/alkaline balance doesn't make it nonsense. With this paragraph, Dr. Mirkin basically invalidated the title of his article:
When you take in more protein than your body needs, your body cannot store it, so the excess amino acids are converted to organic acids that would acidify your blood. But your blood never becomes acidic because as soon as the proteins are converted to organic acids, calcium leaves your bones to neutralize the acid and prevent any change in pH. Because of this, many scientists think that taking in too much protein may weaken bones to cause osteoporosis.
Phil
"Unthinking respect for authority is the greatest enemy of truth."
- Albert Einstein