Jack that is just as bad.
Ignoring people just because they have a different point of view is being dismissive.....bad forum etiquette.

I do not respond to several people here, either because they lie and will not apologise, or are continually personally abusive.

I would never dream of dismissing someone just because he or she had a different point of view.
We are all here to debate.....what is there to debate if we only respond to those with whom we agree?