> I am always shocked, that instead of writing the authors of a website to change it, they write to authors of a browser to prevent it.

If it's fixed once in the browser, the solution is universal.

Contacting every single website that does this (3+ orders of magnitude more than the number of browsers) is vastly higher effort and unlikely to be 100% successful (or even 50%).

And anyway, it's reasonable to fix this permissions issue in the user tool, rather than on the end of the publisher, because the user tool has incentives more in line with users. E.g., for some reason, browsers today block pop-up ads, although once they were extremely popular with publishers. Do you think asking publishers with pop-up ads to just stop that practice would have worked?

> I think each website provides you a content under a certain conditions, and the browser is not here to let you "steal" every content while absolutely ignoring the conditions.

Pulling single sentence quotes, such as "I think each website provides you a content under a certain conditions, and the browser is not here to let you 'steal' every content while absolutely ignoring the conditions," is very much fair use, not theft.