No, its the "FUCK YOU! we know how to use our browser better than you" philosophy.
Hey, they maintain the browser, I'd assume they know how to use it better than I do.
That is not really the point - I have a way that works and they have just killed it. I do not want to spend a couple of days looking for alternatives when this problem was caused by maintainers breaking something because they felt like it. The maintainers are maintaining for their own enjoyment and the lusers are out of luck.
If the solution is something which also works under another browser, I'll look at adopting the other browser.