We could ponder on whether or not we're in fact mid-table and how high Frank could reasonably be expected to take us with these players in general if he got off the ground to begin with. He hasn't.
It's not doom-mongering to suggest that a serious relegation battle would be awaiting us if something happened to Kudus, Romero and another player or two: We're 11th and 2 points off 15th as it is, and metrics still indicate that we're playing worse than that: 17th in xG, 14th in xGA, 16th in xGD, 16th in shots and shots on target, 14th in shots allowed on target.
Any mentioning of Brentford or Keith Andrews in this thread was once considered profane ,but it's unavoidable at this stage: Brentford lost not only Frank but also two key players in Mbuemo and Wissa, and currently have a team where a 35 year old Jordan Henderson plays in every game. Yet they look on par with us, which tells me that even this criticism of Frank of him making us Brentford 2.0 is flattering him. We're not even that.
What are we doing then?