Ejectors are great for rimfires, shotguns, and rimmed (like the 30-30) cartridges.
I don't understand the dislike for ejectors in rifles. Extractors have their place with rimless cartridges. As a matter of fact I like the two I have in .308 & 22-250.
That said, every other one of my rifles are ejectors, including a 223. I never have to scrounge around for brass, when hunting since, I usually don't have to rush a second shot. That's the whole idea when using single shots, right? When I do need a second shot, I open the gun, insert a new cartridge, close it, and shoot. I worry about the one ejected case after the shot.
When I'm at the range, I just put my hand behind the barrel, and break the gun. The case usually gets caught, or at worse falls into a pile at my feet. I do the same when using a shotgun, if I plan on saving the hulls.
Positive and complete ejection/extraction is not a problem, if you clean the gun properly, and don't over lube the chamber area. The ejector is definitely better when gloves come into play.