"Jehovah" is not God's name. It's a made up word. So, no, we probably shouldn't use it. At least no more so than, say, "Bob" or "Steve" or "Pete" or "Dan"...........
The very fact, that they raise such a fuss over that name, should tell anyone with even half a brain, that Jehovah is the correct name of God, because if it wasn't, no one among them would even open their mouths over the use of it.
Hmm. Well I don't get upset over the use of the word "Jehovah". Just over the insistence that it is God's name (when it's not) and that it is essential for salvation.