Today's reminder: there is no "One size fits all."
This shows up in various ways. Perhaps you read a post and your immediate response is anger because the details in the post don't work for you or relate to you. In this case, you can reblog with the note "Not for me but maybe for one of my followers." This approach acknowledges that different things work for different people. Another option is just scrolling past. You don't waste your time with something clearly not meant for you and you don't insult the people who connected with that post.
Maybe someone posts something and you worry because you do what they're complaining about. If what they're complaining about is an approach that works for you, then it works for you and you aren't the target audience. I'm sure (in most cases) that OP isn't targeting you. They're stating a personal complaint on their blog, aware that it IS a personal complaint and isn't relevant for everyone.
...if it IS one of those people who decide that everyone who does things differently from them is wrong and they alone hold the objective truth, consider blocking them. Moderate your experience. Enjoy yourself and block the haters.
Don't feel bad if you do things differently than the OP because they work for you, but also don't attack or insult people who prefer different things. Learn when to scroll, know that you have followers who might appreciate it even if it doesn't benefit you, and realize there is no universal truth, especially when it comes to things which really don't have a major, objective impact at the end of the day.
I've had people comment on my posts and my fics with random, annoying things, just informing me that they aren't going to waste time on my long posts, that they hate the pairing in my fic and don't know why I wrote that, etc. Why waste time on this? Is it that important? In these instances, the person might want to pause scrolling online entirely and focus on some self-assessment time.
If the post connects with something that you do, please don't be hurt or offended. OP wasn't targeting you personally (and again, if they were, consider blocking). I do rants all the time online with the full awareness that there are BILLIONS of people in the world. Do you know why good psychologists dismiss personality tests? Because there are too many people with far too much variation for those tests to possibly work. Maybe OP is really annoyed with something because it doesn't work for them. It is nothing personal to you! If it works for you, then OP's post doesn't apply to you. Keep doing what you're doing, be happy, and realize there are far more important things in the world than a random internet stranger hating your self-insert fic. Don't let people police your joy.
Do you read a post and your first thought is "But what about me?" Take a moment, reflect if you get anything out of OP's post or fic or art or whatever, and if it isn't relevant to you, move on. Don't waste your time sharing your hate or apathy. Go find something that DOES connect with you. If you find yourself starting to angrily or apathetically reply, either to tell the OP all the ways they're wrong or just declare how this post didn't apply to you at all, sincerely take a moment for self-reflection. Why are you spending your time like this? Does this sincerely make you happy? Are there better things you can be doing right now? If not, you should probably focus on fixing that.
"Well, I have the right to an opinion!" And everyone has the right to block you. Your time has been wasted.
"But what if OP doesn't know --" OP already knows and/or doesn't care. Your time has been wasted.
"Yeah, well, it makes me happy to be a troll." Check out counseling, because in the long-term, you are literally doing more damage to yourself than people who are just going to block you online. You will be forgotten and you just harmed yourself and wasted your time for nothing.
"I didn't know and I feel bad about making this mistake." Don't feel bad! Maybe you did the thing because that was how you thought you were supposed to do it. Just change your method in the future. Maybe you do it because it is your preferred method. Then keep doing it because that is what works for you. No worries! At the end of the day, you are the one who has to live with it. Don't let strangers on the internet make you feel compelled to live to their standards.
Seriously, people... there are BILLIONS of people alive right now. Nothing is universal, especially random things on the internet. If there is something not immediately relevant to you, that is fine! I promise!