1. Windows 10 S has mostly been a failure.
2. Web Environment Integrity, while horrifying, has not been rolled into Chrome! It's an early proposal. We should work to ensure it goes nowhere.
3. The above greatly pushes out the plausible timeline for events currently listed next to 2024, 2027, 2028, 2029, 2031, and 2032.
An aside, I don't find "Apple enforces notarization" to be significant, since it only applies to code-signed applications. It would be better to list "2012 – Apple blocks unsigned apps by default on Mac" and "2016 – Apple hides option to allow unsigned apps from the Mac GUI." The rollout of System Integrity Protection should be in there too. I'm personally not against any of these changes in isolation, but they are absolutely part of the slippery slope the author is trying to highlight.
Maybe I'm nitpicking, but I think the article would be more powerful if the content was more plausible. If you already agree this is a problem, the specifics don't matter, but if you're trying to show the pattern to someone new, the facts you present are important.