The issue for a lot of devs is if you want to use any of the new stuff you can't ship a single file portable executable. You have to do a packaged installer. So MFC warts and all can still be faster and lighter than other options unfortunately. I was hoping WinUI3 would have a way to do single file delivery but it doesn't as far as I can tell.
For GUI things, I prefer a nice installer that will place the files in a sensible location (Program Files) and that will give me a shortcut in the Start Menu, I don't need a single file - and I suppose most users are likely to misplace the single executable or keep it in the Downloads folder forever.
Also, what counts as a single file? You can ship a (modern) C# app as a single-file executable. It will be hundreds of megabytes, but to the user, it's just a single file.
A nice installer is ideal, but more work to setup I think (I've never figured out how to write an installer so far). And I want the ability to download many versions and put them side by side for eg. running old versions, or bisecting bugs.
In my case the app in question is about ~6MB and an occasionally used utility, I could make a setup version that dynamically loads things... but why? Most users would prefer to just use it, delete it, and if they need it again grab it again.
Oh I've had so many nightmares trying to extract the underlying files from Inno Setup installers. 7-Zip doesn't work, innoextract and such is fiddly to find and IIRC doesn't work 100% of the time (forgot).
