Why doesn't CSPAN televise filibusters? Is it because they do not like Republicans?

The filisbuster has changed.

It used to be that, to filibuster, one or more senators would actually have to hold the floor.
Today, they merely invoke filibuster but do not actually give lengthy speeches.

I would support a return to the old protocol in which, if ya wanna filibuster, hold the floor, give speeches, read from the phone book, whatever, and see if we can outlast ya.

Democrats should demand that Republicans actually do this.

If Republican senators (the former Sourthern racists) actually had to do this, we would see far fewer filibusters carried through to completion
.
The failure of Democrats to demand this is a legitimate instance in which Democrats are rightly criticized for being “spineless.”