I am begging you. Please learn about stress/discomfort tolerance. Practice raising it. You need this to survive. If someone online can ruin your day with a throwaway comment, you desperately need to understand discomfort tolerance and consciously, systematically build that shit.
Also! Stress tolerance is such an important skill that having a learning disability in that area is a major symptom of a whole lot of other disabilities/mental illnesses! Struggling with it is a huge part of life! It sucks!
Am I saying everyone with misophonia needs to listen to chewing noises all day? No. But you need to find ways to tolerate it enough that you don't treat others like shit if they make a mouth noise near you.
No, you don't have to read the fic with your trigger tags. But you do need to be able to handle scrolling past the tags without being upset.
It is hard! But not having it also makes you so so so easy to manipulate. That grandma is racist AF because her mom raised her to be uncomfortable around black people and she never fought that discomfort. Trans people make so many cis people uncomfortable and that discomfort turns into bigotry real fast.
Letting your discomfort dictate your actions and beliefs about things is a great way to become a terrible person. Learn. Discomfort. Tolerance.