Earlier quoted context omitted.
You can disable autoupdate and manually check for updates occasionally. Also, any time an application is available from both inside and outside the App Store I always prefer the outside one. The sandboxing that the App Store imposes is a massive pain. There's also no reason in my mind that Apple deserves a fat slice of my license payment.
I automatically prefer the App Store one because: - I know it will be updated automatically - Sandboxing prevents many dark patterns that apps use to sell advertisers data
As for sandboxing, yes it does prevent unscrupulous apps from doing shady things, but it also prevents apps from doing their jobs. The MacOS image viewer that I use is a great app called Xee3. I made the mistake of buying it through the app store instead of through the developer's website. So now when I open an image and hit pagedown to browse to the next image in the directory, I have to click through a popup granting it access to read the directory, which is the app's way of working around the sandbox restrictions. So the app store version is strictly worse.