I fail to see that it makes any difference - the "pastors" in question are certainly not to be shown reverence if they are teaching heresy, wouldn't you agree? I'm not saying that the Pope or anybody else who might qualify as a pastor is teaching heresy, mind you, but many of them are not teaching the magisterium, either. And this should be countered agressively.
Just holding a high position in the Church does not make you free from error.
BTW, it's possible that he was quoting from the earlier code of canon law - the cited article by Romano Ameri was published in 1976, for example.
the "pastors" in question are certainly not to be shown reverence if they are teaching heresy, wouldn't you agree? The 2004 years of Church history show that the Pope has never ever taught heresy.
many of them are not teaching the Magisterium
This never ever applies to the Pope.
Just holding a high position in the Church does not make you free from error.
It actually does, if your position includes wearing funny hat and white socks. ;) See Vatican 1 - accepted even by the most Latino of the Latin stitch n' bitch societies.
BTW, it's possible that he was quoting from the earlier code of canon law.
The 1917 Code was all in Latin only, and the numbers don't correspond with the 1983 one.