I spent 3 years in Wisconsin (the land of the muskie) and you never really heard about people icing them too often. Pike, yes, muskie, no. Don't know why. You might ask your question on another board, like the Wisconsin board because folks would most certainly know why. I'm kinda curious myself? But they seem to shut down in the winter for some reason. Not saying folks didn't occassionally catch them, but they weren't iced nearly as much as pike and not nearly as many caught through the ice as during the summer.
Same thing with both LM and SM bass ya know. You'll occassionally catch them on the ice, but not too often.
You are correct, tigers can't breed.