There's also no practical reason you can't have biodegradable plastic cups for steel shot.
I grew up hunting, mostly bigger animals, I never bought meat until I moved away from home. We didn't use shotguns at all, mostly because it's been clear that lead is bad news for ages, and you couldn't really get steel shot where we were. And a bonus of hunting bigger animals is that if you do it right the projectile doesn't exit. The whole post above just sounds like a bunch of entitled whiny "I want to have my cake and eat it too" bullshit.