Excellent, but they never do that, for they want to be invited again.
If Republican did say such things, and if the networks did get offended, and if the networks did stop inviting Republicans to appear ...
... don't you think the public would eventually notice that 100% of the guests on political talk shows should were official, card-carrying members of the Democrat Party?
The networks need Republicans to show up. One of these days, the Republicans will realize this.