There is a very enjoyable irony to the notion that you would accuse a community of groupthink for a perceived lack of accepting your opinion as the one true way.

The only opinion I was expressing was that of surprise the down vote for a perfectly decent comment, it seemed to be related to the topic, rather than the comment. I admit, the group think statement is a hypothesis, but not an unreasonable one given the circumstance.

There isn't really any need for smugness here.

What part of the parent's post makes you think he/she agrees with the GP?