I would think the App Store asks the OS to install apps. More importantly, you can argue about the interpretation of that text, but in the end, it will be how

I would think the App Store asks the OS to install apps. More importantly, you can argue about the interpretation of that text, but in the end, it will be how the EU interprets it, and I don’t think there’s any way they ever intended it to mean “the DMA requires free interoperability”, or that they will in the future decide that to be the case. Of course, future legislation may say different things, but that won’t make the statement true.