a) It's not really a DELAY; there's never been a firm timetable for any of this stuff. Indeed, since Tory just announced the DRL-south is opening 2 years earlier, I could argue YSNE also just got moved up 2 years!
b) There is no indication, not from Metrolinx, not from Toronto staff, not from Toronto council, that a just-to-Steeles extension in any way would mitigate the capacity concerns or is in any way under consideration. So you might as well support a just-to-Cummer extension or a just-to-Wedgewood extension or a just-to-Golden Star extension. What problem are you solving there?
All the residents who live
here [pictured below] will be getting on the subway whether you leave it at Finch, extend it to Steeles or to 7. It's 2019 - why are people on this thread still supporting a non-existent to-Steeles extension that is unfeasible politically, non-sensical in terms of policy and meaningless in terms of transportation patterns? Given the built form in the area in the early 1970s, I'm pretty sure you would have barely supported an extension to Sheppard, much less said, "Oh, it totally makes sense to go all the way to Steeles, so the cows can ride trains too."
Ah - yeah, this is Yonge from Cummer to Steeles in 1973, a year before Finch Station opened. If you think building a subway to HERE "in the first place" totally made sense but a subway north of here in 2030 doesn't, well, I'm just not sure I agree with your logic.
And DRL to Steeles? Even more baffling. No one is seriously suggesting it go that far north (certainly not before 2050) or that it's necessary to achieve the desired capacity. Honestly, no offence but you must be living in a world different from mine, where something physical actually happens when you hit Steeles Avenue; something changes, like human beings become minotaurs or you're suddenly transported to 1930s earth where you have to not save a young social worker from being hit by a car or you suddenly find yourself in a winter wonderland with street lamp mysteriously shining. Because otherwise, all this "I fully support X to Steeles" only makes sense in the abstract.