...and that no State, without its Consent, shall be deprived of its equal Suffrage in the Senate.
One might argue that those states not ratifying the 17th amendment are exempt from it.
Excellent point.
I don't see how you can make that argument unless you also want to argue that those states that didn't ratify the 13th Amendment can still have slavery or those states that didn't ratify the 2nd Amendment can totally ban gun ownership.
"Equal Suffrage" means equal representation, and the 17th amendment did not change that. It only changed the method of choosing Senators, not the number of them per state.
-PJ