Those are all valid concerns, but there has never been any public acknowledgement, to the best of my knowledge, of this being the driving ideology behind the push for subways. Every soundbite from every politician I have been able to find has not shed any concerns about the reliability and value, or lack thereof, of the present streetcar network, it's always been about ensuring Scarberians don't feel like "second class citizens" and how it's not fair that the latte sipping downtown dwelling liberal elites get their subway trains while Scarborough doesn't.
If they had actually pointed out of all of these valid concerns with the present streetcar network, that may have actually been useful. It could've started a dialogue about what we expect from such vehicles in this city, how we can avoid that happening on the SRT replacement, and perhaps been beneficial for the legacy system in the inner city, too. But alas, they chose to forego the interesting, thought provoking discussion in favour of complaints which are on the same level as pointing at a Japanese bullet train, and asking "How come the Forest Hill bus doesn't run like that?"
Such is the state of discourse in this city, regrettably.