Re the above.........
I will say, just as with the O/L I was not an REM cheerleader.
Its not because I was happy with or a defender of the status quo, its because I could see theft from the future HFR/HSR and other, in order to satisfy the present/near-term, and that plans that appear better value do so only by shifting their cost to a different project/provider.
There's nothing inherently wrong w/REM as an idea or with O/L in the case of Toronto; the problem is that both projects appeared to be better value for money that conventional builds in part because they took over existing corridors/infra as if there was no opportunity cost, and that wouldn't come back to bite.
I completely get that one should not let the perfect be the enemy of the good; but neither should one give up all future ambition for a slightly better present.
Both project sabotaged other future choices, either precluding them, or making them much more expensive and complex than they would have been otherwise.
That's why I will always discourage what I see as mindless cheerleading. Question everything! That doesn't mean you don't go ahead and build, maybe, even what has happened here; but you should do so eyes open, not closed.