It is bizarre that you're "pinning" this on the Chromium engineers - who are essentially the only ones moving the web forward.
The safari feet dragging/obstruction goes far beyond PWAs. The chart on this page is one of many examples showing how consistently far behind Safari is - they've been enormously behind chrome and firefox in coverage of tests for 7+ years. https://wpt.fyi/. And here's an extremely comprehensive article on the topic https://webventures.rejh.nl/blog/2024/history-of-safari-show...
As for standards, here's another detailed series to learn from https://infrequently.org/series/effective-standards-work/. Once again, you have it all backwards. Saying "no one is giving Google enough gruff for the conflict of interest with Google Play's moats and making over-complicated standards" is not only laughable, but just dumb - Google doesn't and, in fact, can't "make standards". Standards are something that comes about through the painful diplomatic process described in those links.
Moreover, it is quite clearly an institutional decision to hold back the web, or else they would allow for other browser engines to run on iOS rather than focing them all to be skins on webkit. Again, this is all documented in extreme detail in the articles on that site. If you find it to be still somehow lacking, the author is very open to discussion on bluesky or mastodon (I'd prepare far better though, because what you've said thus far would get eviscerated).
Also bizarre that you are saying that Google Play is somehow at the root of this supposed scheme to make web standards impossible for others to implement. Android is similarly against the web flourishing, but evidently not nearly as powerful in the greater Google enterprise as iphone/app store is in Apple.
As for MPA PWAs, there's nothing at all stopping you from serving pages from a service worker. There's plenty of valid and accessible ways to precache all the pages that a user might need while offline. Workbox (from Google!) makes it easy, but its also easy to hand-roll.
And, Microsoft most definitely has not given up on the web platform - they literally adopted and make contributions to chromium. The author of that site literally works at Microsoft now, coaching both internal and external teams on improving their use of the web, as well as contributing to standards.
I dont see any point in continuing this discussion, as you haven't shown even the slightest interest in considering how you're living in some bizarro world.
If you are actually attempting to communicate in good faith, i can't recommend strongly enough that you read that entire site. And, likewise, read and support the work of Open Web Advocacy. https://open-web-advocacy.org/