It wouldnt be redundant since people from about East of Martin Grove, north of Bloor, west of Jane, and south of Dixon would all be using the LRT to get to the airport.Isn't the whole idea of an Eglinton West connection to the airport redundant since it will connect to UPX at Mount Dennis station anyways?
Mount Dennis to UPX would be so much faster to get to the airport than staying on an LRT.
Eglinton West seems to be waste of money for such low ridership. It may not really be much faster than buses.
Let's remember that passengers generally prefer to reduce their transfers as much as possible, so you would still get a healthy amount of passengers who would stay on the LRT all the way through to the airport instead of wasting their time getting off and Mount Dennis, walking to the UPX station, waiting for the train and then boarding once again. By the time one did all that, they would probably be halfway to the airport.
Also let's remember that it's not just the airport that people are trying to get to, it's the airport corportae centre as well. UPX is useless for people who work in that area; Crosstown West on the other hand would significantly boost accessibility to that area.