This — Browser Is Not Supported

You are being told: Your choice of tool is a liability to our metrics.

So maybe that’s the real post.

The most “supported” browsers today are built on the same engine (Chromium). So “this browser is not supported” often really means: “This particular skin on the same rendering engine is not on our approved list, because our automated test suite only runs on three user-agent strings.” This browser is not supported

"We chose not to write the code that would make this work for you. Our priorities did not include your setup. That is a business decision, not a universal truth. We are sorry for the inconvenience. Or we are not. But we are calling it 'unsupported' to shift the blame from our roadmap to your browser. Goodbye." The deeper lesson: You are being told: Your choice of tool

Often, the site works fine. You just have to dismiss the warning. Click past the fear. The red banner disappears, and the content loads anyway. Because “not supported” rarely means “impossible.” It almost always means “we didn’t test it, and we’re afraid.” So “this browser is not supported” often really

But you don’t need their permission to read.

This browser is not supported is not a technical error.