Back, how? I don't disagree with the gist of this article, but that SmartScreen window has looked like that for many, many years. It's not new, nothing is back. Microsoft was never fantastic.
The only thing that's new about this article is the bit about WinGet, which is so beta that it's hard to assume that its "SmartScreen means malware" behavior will remain like that.
I do agree with it btw, it's just like how Gmail's spam filters make it super hard to self host email. This is monopolistic behavior under the guise of protecting users, plain and simple.