andy, you had every right to write about the review. As you said before, it's been published for all to see, why shouldn't anyone else comment on it - adversely, if it deserves it? The editor seems rather thin-skinned. He's welcome to produce his website as a labour of love if he wants, but the minute he makes it public he lays himself open to public comment, and that's what he got.
At least he made the correction - but only because of your intervention.
The pros do make mistakes, of course. A friend of mine once reviewed a gig by a well known band for a national paper - it read fine, except that because of a brainfart the size of Wales, he got the name of the band completely wrong. Consequently, he never got another reviewing commission from that paper. That's what happens to pros who screw up, and it's why they seldom do so. Amateurs on the other hand can get away with murder.
(I won't name the band, because the poor guy's grovelling apology is still online, haunting him 20 years later.)