I agree 100%, I've been screaming this for a while now. I personally think the mistakes started when they drafted Harris with a 1st rounder but you can go back even further than that with those same issues.
I'd argue, with hindsight, the wrong decisions considering what would've been best for the future was trading the 1st for Minkah.
Minkah obviously had great seasons since, but this team was never an all-pro safety away from winning a Super Bowl (without even mentioning the fact safety just isn't that important a position).
Minkah's efforts that year led to more wins, when more losses would've been more beneficial, and that 1st had that team truly bottomed out that year could've proven a truly impactful pick. But alas, nothing can be done now other than hope they learned their lessons going forward.