We cannot unfortunately know the level of experience unless someone tells us...
A little over 10 years ago AOPA, supported by GATCO and the RAeS suggested to the CAA's SRG that civil flying training schools adopt the military R/T call-sign prefix "
Tyro" to indicate to ATC (as it does in the military) that the pilot is a student and thus inexperienced.
SRG was not minded to accept the suggestion ~ clearly, its neddies felt that they knew best.