This sells me on the opposite of what the author is saying. If, because some jackass decided that to open a page in a different window I need to click the button, copy the URL, then go back and open a new tab, then paste, that's a terrible experience. This proposal presupposes that the developer is smarter than the user (they're frequently not!). There's functionally no reason to do this. It doesn't add anything for the user, it only takes things away in the name of making it feel "more native".
> Should “Cancel” be a link? No! Its job is to close the edit view.
I've been building websites for 25 years and I've literally never had this problem. And that's partially because "Cancel" is pretending you're in a desktop app with desktop idioms. No real, actual person designs websites like this. And the number of people who are doing zero styling but who also care about the distinction between a link and a button is vanishingly small.
It's simple: just stop trying to be clever. Design a website like you're writing hypertext.