Fully reusable falcon 9 have been scrapped a very long time ago because they realized it wasn't the right hardware for that. Starship will be and way way more capable. The test flight that exploded never intended to survive. Hoped? For sure. Intended? Absolutely not. It was a test prototype, not a rocket in the sense you make it.

Turnaround for space shuttle was 54 days at best before the explosion of challenger, 88 days since. Falcon 9 is down to 32 and keeps going down. 32 vs 88 is not almost the same. Second stage will never be reused neither will parachutes on Dragon landing. SpaceX wanted propulsion landing, NASA refused. One day they might change their mind (NASA) with starship.

You keep pointing at possibilities that might have been discussed or even said at some points, and I understand your frustration, but none of these were signed deals, they were possibilities or goals to try to achieve while developing the technology, then realising a better solution works (like catching the fairing halves vs. grabbing them from the ocean).

The timeline that's over confident is for the sales pitch, that's for sure.