https://screenrant.com/mash-actors-left-show-rogers-linville-stevenson/

Several key MASH actors exited the show at the height of its popularity, with reasons ranging from fear of typecasting to creative differences.

https://screenrant.com/mash-actors-left-show-rogers-linville-stevenson/

Several key MASH actors exited the show at the height of its popularity, with reasons ranging from fear of typecasting to creative differences.

M*A*S*H had an interesting evolution, and I don't really think that it ever "jumped the shark."

The show had an amazing run and the casting and recasting was pretty much flawless.