Earlier quoted context omitted.
This IS adhering to the DMA. Every browser engine is treated the same.
Deliberately removing useful features from your own product so that you don't have to let other people implement the same features may be technically conforming to the letter of the law, but is clearly violating it in spirit. The spirit of the law is platform interoperability: your control over the platform shouldn't restrict what other people can make it do (be it "run an app store" or "run a web app").
If they wanted, they could remove the App Store from iOS in EU, or pull the iPhone from the EU market entirely. Apple isn’t required by the DMA to part of a digital market at all.