We all know that we're slaves to our emotions and our biases. We can't help but anger at injustices, or side with our own politics, or favour friends over strangers. It's in our nature.
When it comes to Screenwriting, there's no getting around feeling hurt when our art receives criticism. A bad review or a critique of craft is like an insult; like a being spat in the face. When a partisan persuasion is pointed out, we feel the need to declare allegiance to one viewpoint or the opposite. It doesn't matter the argument, we put up a mental block of conceitedness.
So, of course, this is a reminder to remain as objective as you can in your conduct with others' works or others' conduct with yours. The true measure of a writer is their critical thinking ability.
Should you disagree with another's politics, be mature and don't take it out on their work. Nobody agrees fully on anything, but it's those who can deliberate and fully flesh out their point that are the rightest.
If they nitpicked your work's weaknesses, do not in-turn negatively review their work. It may feel like an insult or some slight towards you, but it's an opinion, or it's to help better your craft.
We're in a community together, not a contention together.