I felt this way too! Here's how I worked through it: 'keeping the internet free of useless opinions' is not a good thing. The internet isn't like a crowded room. When you're saying something, it's not like you're talking over someone else. There is actually room for everyone to say however much they want.
Also when you're spent a while learning something, things that seem obvious to you, won't seem obvious to others. It can be especially helpful for people who are at an earlier stage of their learning journey.
Just my 2¢!
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