Someone who's being too aggressive can make it less likely people will come to agree with them.
A quote from The Big Lebowski: "It's not that you're wrong, it's that you're an asshole."
If people think you're an asshole, they won't want you to be right.
They'll get in a defensive crouch, won't be open to how you might be right.
You can be an asshole without realizing it, because what matters is what your conversation partner thinks.
If you're being overbearing, over-flexing your formal authority, intimidating or exhausting them, they're more likely to see you as an asshole.
This can be a self-catalyzing toxic spiral.
People aren't listening to you so you push harder, making them see you more as an asshole and becoming even more closed to engaging with you.
As people refuse to engage you get more impatient and upset, coming across as more of an asshole.