There are lots that do. I don't know how many times I've had to start a new terminal thanks to some program spewing binary data into my console. The netpbm tools come to mind.

And this whole discussion is yet another example of how Unix is broken: It promotes behaviours that can easily be disruptive, without giving a mechanism to easily avoid the pitfalls, leaving it up to individual program authors to jump through every required (and non-obvious) hoop. In the end you can't blame every individual programmer for not learning the secret tricks, when the system should have provided easy-to-use mechanisms instead.