Microsoft disabled Internet Explorer back in June 2022, and the now-dead browser no longer receives security fixes.
Then, a few paras later...
Basically, marks are tricked into opening a malicious shortcut file [..] that activates the Windows PC's dormant Internet Explorer
Seems to me the crux of the problem is this: Redmond's idea of 'disable' and most people's idea of 'disable' are at odds. Their version seems to be 'well, we took the icon away so people can't click it' - and left the codebase in there, complete with any attack surface it presents. Some might say that's the inevitable result of spending ten plus years embedding browser tech deeply into the underlying operating system, suggesting it's impossible to properly remove I.E. without breaking core OS functionality.