No wonder when installing anything on Windows have so much friction compared to Linux and MacOS. Every program have it’s own installer and updater, bundling dependencies with no deduplication making simpliest program heavy. Like, when writing a Python program you are supposed to bundle Python or user would need to install it manually.
GNOME created awesome app ecosystem recently. I have hundreds of them installed, no slowdowns or problems with space, all updated in single menu with quick search which one I want. Apps on desktops have even more sense than on mobile, as they can benefit from less isolation and more integration with rich filesystem and system functions.