Okay, enough. This is a public internet forum. Anyone can post and read here. There is no way to limit posts to a certain group of readers and no way to block any reader from posting and commenting. Although I find the constant comments a bit tiresome, CanadaMommy has not bashed or said anything attacking in any way in recent comments. Her comment in this case was not even what I would consider snide.
Perhaps many of us consider it productive to read and go through the posts made by all posters and make comments. Sometimes snide is in the interpretation of the reader. An option to reduce annoyance would be to use the "Toggle User Visibility" feature to block the posts of chosen forum members from your view. To block all posts from a particular forum member, click on that forum member's name. From the drop-down menu, select "Toggle User Visibility."
Viola! Problem solved. After toggling, no posts from that forum member will be visible to you.