Aggressive one minute, frustrated the next and possibly 'often' so.
As far as discouraging greater and wider comment goes. My reading of threads here indicates to me that ignoring the posts/points of view of others, more even that going off-topic, is the greatest offence.
However, I am such that will not be discouraged in that way.
Post #3 says that my contribution was unnecessary and wholly wrong, but says nothing else. I at least couch my staccato remarks within (what I trust to be) a greater and further contribution. What point was there/is there to #3 than to drop-in to tell me to drop-out? Motes and beams, does not begin to cover it.
Yet it is the word 'often' that rankles. I find it underhand and cowardly.