Yeah, it may even be an understatement. Ukraine began the conflict with the largest and most extensive ground-based air-defense network in Europe after Russia and they had good know-how in its employment. Soviet-legacy systems have certainly borne the brunt of the attrition in terms of missile shortages and destruction of the such systems, but the arrival of Western systems is largely making up for this shortfall, particularly in the defense of the main cities.

Since SAMs have been a thing, probably the only instances where an Air Force engaged in dealing with a comparable air-defense network were in the actions against the Iraqi military and strategic installations in 1990 and in Baghdad in 2003.

Yes: they have “frequency 149.200”, and invite Ukrainian soldiers to tune in there with their own radios and look for the call sign “Volga”, which will provide instructions for their surrendering.

That said, beyond the propaganda, the number of soldiers who surrender voluntarily (especially Ukrainians who surrender to the Russians) with these methods seems very limited actually.