“Roll the trucks” is a demonstrable phenom in a specific demographic. Not Nationality specific.
To attempt to turn that into “trashing other nations” is hyperbole at worst and naive at best.
The pilots who choose to use casual RT are a specific bunch - they use the same R/T worldwide. Similarly; the ATC who choose to use casual R/T are also localised; they expect the non local pilots to understand their lingua franca that they apply to all pilots, both foreign & domestic.
Professionals adapt, overcome & improvise.
It has nothing to do with countries. It’s all to do with training, standards and attitude.
But in the context of the UK’s current strife I’m not surprised someone tried to drag nationalism into this pretty inane and basic discussion.
Hey ho, the JAL 350 evacuation & the AA 320 evacuation demonstrated these differences quite clearly.
Caveat;
there are none so blind as those who will not see