This is obviously a totally unscientific approach: distorting interpretation in order to fit an existing theory.

Your explanation of the Dacicus/Carpicus problem is totally unconvincing. You can't have it both ways: either the Carpi were ethnic Dacians or they were different. They cannot be both at the same time. There is no good reason why the Romans would not have used Dacicus for both Free Dacians and Carpi. Your argument that they alternated between the two flies against the evidence.