I agree with you that it shouldn’t come across as weakness, and to a mature person it is sign of strength. I should have phrased it better, but my intention was to say that in these online forums many of the ‘spectators’ (who up and down vote, and/or pile on) seem to read nuanced arguments and open-minded thinking as being “weak”.
In other words, there’s often too many points scored for having an aggressive style, nasty sarcasm, insults, etc.