Ye, Apple just doesn't support PWAs fully because they're "pretty content with the money they may from the app store".
Prime example being push notification support, where Android has random 10 minute latencies added because they don't want to fix the service worker startup problem.
No, it's not, Apple hides it behind a "share" link that had nothing to do with installing a PWA, the most incongruent UX in the whole OS, God knows why