It's very telling the way NASA suppressed Miskolczi's research. NASA chose to suppress his research because Miskolczi makes a strong case for an alternative climate model that contradicts the theory NASA is heavily invested in. The EPA also suppressed one of its own analysts who wrote a report concluding that any global warming in the climate history is not caused by human activity or CO2. Why do government agencies insist on suppressing alternative viewpoints held by qualified scientists? It's because the current climate models and global warming theory owned by NASA and EPA are filled with errors and false assumptions and did not predict the historical climate record.
His is a model only in the sense that the incoming SW and outgoing LW can be analyzed for a particular column of air to determine net warming. Doing that for varying latitude columns is nice and gives you some general ideas. The problem is that the main parameter in the column is water vapor which can only be determined by modeling weather. In a sense Miskolczi makes the same mistake as the IPCC modelers in oversimplifying weather to a parameter or set of parameters. Then the argument devolves into whose assumptions are correct for which the answer is emphatically: neither.