This has been happening more often lately, in my experience. Sure, you could say that the website is broken and not the browser. But from a user’s perspective, it used to work and now it doesn’t. Users don’t care whose fault it is.
But big corps don’t care if less than 0.1% of users are impacted. Even if that means 100,000 people. So it’s ok to break a few eggs.
As a website owner myself, I’ve had to make changes about once a year to keep things running properly in Chrome due to deprecated APIs. This is for a website that has not changed at all otherwise in 5 years, and I built without using any external dependencies so that I can avoid updating things.
Compare this with other environments: Windows apps usually can run for 20 years without issues; Linux apps even more. Not to mention document formats, like PDF, which are pretty much guaranteed to be accessible forever. Adobe got at least one thing right.
The only good thing I can say about this disregard for backwards compatibility is that it gives web developers good job security.