The uptake of flight crew visits to ATC from my experience is very low, when you do visit it is also for a short time.
Regarding fam flights ,since the 20th Aug there have been further restrictions placed by the CAA with some airlines now not allowing ATCO's on the jump seat.
We need more interaction to get things running as smoothly as we can between us, but those not at the sharpend don't seem to care or maybe just do not understand .
I think the French debate will just run and run ,maybe its a ploy to get you all to learn the language.