For me , it's a case of post what you like within forum rules. If you want to go big and vent your frustration midway through a game, that ends up being wrong or misplaced, no big deal but a bit of humility wouldn't go a miss - admitting you were wrong or were glad you got it wrong - is always well received. It's a forum for like minded people who largely have the Devils interests at heart. If you can't vent on here about your team, where can you vent?
I think we all know the posters who are in too deep to back out and change their opinion and prefer to double down. It's bit cringeworthy but it gives this forum an extra edge and makes it more interesting, comical, frustrating - take your pick.
The 'ignore' function is there for a reason.