Emotionally housebroken adults know when it's counterproductive to "discuss concerns", and can take the hint without getting all indignant and blustering that no one's the boss o'them.
No idea what you're alluding to in your last sentence, and I think you might be confusing me with someone else.
...he keeps on thumping, after posturing how unbothered he was and scoffing that I could have the last word.
The lady doth protest too much, which brings us back to the issue at hand: Get your anxiety in check and master your emotions, soldier.
Now that you got that off your chest and are done thumping it, understand the difference between being concerned and risking demoralizing others as the chips are falling down just because you can't master your emotions.
Again, you're not helping anyone, least of all yourself. So get over yourself.
Might as well be. Voicing their concern is the equivalent of making a point that everybody in the trenches can hear your quivering "guys, are we all gonna die... I'm afraid we all might die" while the enemy is charging your lines.
If you don't have words of encouragement to share at such a time, it's chin up and mouth shut. You're not helping anyone by voicing your anxiety with lips a-tremble, least of all yourself.
You're like a sheep telling the shepherd dog not to attack the wolves. If four years weren't enough to show you that these increasingly emboldened degenerates are coming for you (oftentimes with the complicit assent of Democrat leadership and police top brass) and that playing the "cool it!" guy will get you nothing but a bike lock on the dome, then that's exactly what you'll get coming for you.
Trust me, pede, you are. There's little you can do to help hundreds of separate stragglers with poor situational awareness throughout the city after an event unless you have a militarized organization.
I feel your rage and indignation, but to say the Proud Boys are never around when shit goes down is disingenuous at best.
That's an ass-backwards assessment of the situation. Where were BLM/Antifa when the patriots showed up in force? And where were you when Proud Boys were arrested for bringing the fight to anarchists in the past? Probably making 'glowie' jokes.
Taking potshots from the sidelines because people with poor situational awareness went their separate ways and were individually picked off is a shitty thing to do. Don't do that.
Imagine you're hunkered down with a well-armed company in a spot you can't afford to lose while the enemy is shelling you and trying to take your position. The opponent is taunting you and blaring out that everything is lost. One of your comrades whimpers "I'm feeling a little scared, guys. The general gave a rallying speech and is going for it, but I have a sinking feeling that we're gonna lose anyway".
What would you think of him, and how would you deal with his attitude?
You seem to be unfamiliar with the concept of morale and keeping your spirits up against a side that wishes to have you destroyed.