"there are no competitive formats just like there are no casual formats"
When the creators of the game are sanctioning organised competitive play with significant prize money, but this only extends to certain formats, I would argue that there absolutely is a difference between the competitiveness of formats.
"No one gives a fuck about their vision"
They give a fuck about their vision, and it's their decision to make.
"You ban them for being oppressive"
They are banning based on what's oppressive, the difference is, how they are defining
oppression is different to how you would. Neither is wrong, it's just a different stance on the same point.
"But the ONLY way to create a proper banlist is through competitive"
This is demonstrably not true. EDH isn't competitive, but it has a ban list. It might not be one you personally agree with or support, but it exists.
"You can tell me I'm wrong but the existence of this thread already proves me right."
In what way does this thread "prove" you right?
I'm not about to tell you that you are wrong. It's your opinion, it can't be wrong or right.
This thread consists of many people who enjoy the same hobby, discussing one aspect of that hobby and it's pros and cons. There have been many different opinions expressed, but ultimately they are just that; opinions.
No one has been wrong or right. My opinion on the matter is different to yours, but it doesn't make either of us right or wrong. You are entitled to yours as much as I am mine.