Did you actually watch the entire presentation? It was pretty ugly watching the OS operate like a hockey goalie, keeping even outright, well-known software like Sophos products from being executed. The point is third-party developers will have to be formally approved by Microsoft, otherwise they will just be filtered out, neutralizing the executables.
Ultimately it will just all depend on what people want, versus what they can download. But it looks grim.
No deviations or customization, or feature enhancement other than that which Microsoft officially approves. I suppose this will probably kill third-party apps like Classic Shell/Open Shell now. Wonderful, harmless apps designed to customize Windows far beyond the stodginess of Microsoft. I used them in both Windows 7 and Windows 10.
One thing for sure if you can't successfully download freeware, it ain't free any more.
So glad to have Linux as a much better, more secure alternative that welcomes customization.
Yes, I did watch the whole video, though I found it... wobbly, at best (a lot of red flags for me in there).
But what I'm very specifically getting at is this line:
But according to this presentation, Microsoft's antivirus/anti-malware programming will stop any incoming .EXE file.
That would mean a lot more than just customization apps/utilities, that would mean EVERYTHING, unless I'm misunderstanding what you're getting at. Utilities, games, art apps, design apps, programming apps/utilities, projects that a user is working on (on their own time, involving nobody else), projects that GROUPS are working on, where files need to be updated/transferred among the group (which is something I've had to do before myself, that was A LOT of exe files bouncing back and forth as we all kept working on it, that would no longer work here), heck, freaking Git, for that matter. Steam, Itch, Epic, all of those vendors also come to mind, they'd totally collapse because they're entirely ABOUT people buying/downloading things that are designed by a zillion different people/groups (and the enormous companies behind those vendors would not exactly take that one sitting down). Also things that need to be updated, as many apps pull down new exe files just during the update process.
I can absolutely believe that MS or whoever would restrict like, apps that affect a very specific part of the OS (like a part that customization apps, specifically, need to do). There's a LOT of reason why that, specifically, does make sense (and I can see both good AND bad there), and I can understand frustration that users of that specific type of function might have (even though I dont use that sort of thing myself, I'm too lazy to customize anything like that).
But restricting literally all exe files, of ALL types, so they cant download/act at all? Ye gods, no. I dont believe that for a second, video or no video.
There's more I could say here, but I'm seriously out of time.