Nah, other factions have very powerful, free healing as well, like the ambulance and all the self heal on vetted OKW squads.
On Wehr it costs 15 mun, yes, but there you have it available on every single unit and the heal rate is much faster too.
Soviet cries with their 3 whole medics in base...
Also the ambulance costs fuel and is vulnerable to dives, also takes up pop cap.
Also 1 veru combat capable squad being able to heal itself as a reward for doing swimmingly all game =/=1 squad being able to heal an entire army including allies as many times as they please for only 30mu
Also Ost only has 4 man squads aside from ostroppen so being able to keep them topped up on field is plenty acceptable. When casting it also requires the casting ad receiving squads to be stationary.
You are literally defending a combat capable ambulance because other guys can heal less flexibility and at greater costs? Smells a little biased to me