Yes, it´s easy to muddle things up in English! Ha ha ha.http://www.corsinet.com/braincandy/hanimals11.html
The balance is on the middle. For example, it´s impossible to learn English with no rules, no grammar, no system of organization. One can´t take to the extremes as well. I agree with those that somehow rebel against some things of old, but one has to see the work of pioneers and that many evolutionary ways are not that evolutionary. On the other hand, language is dynamic and the party must go on.
The featured item has cited that "you will not find an English speaker who does not at least occasionally fret about whether he or she is committing an error
." I don´t see much of an insecurity there, and I bet he was one of those that laughed his way to his office when he heard of some Bushism!
In time: that wouldn´t make him a nitpicker, just a normal English speaker.