I feel it is fair to say that the last half decade has seen transit technologies become a partisan game. This goes for Miller as well, not just Ford, though the former at least didn't intend to see it played out like this.
If Miller had announced plans for a subway line in his Transit City plan, or even at some point later on, then I don't think we would have seen Ford and the right try and twist the technology debate the way that they have.
Likewise the left has denounced everything but light rail (coughstevemunrocough), with the exception of the downtown line. The way some of the left argue against subways, you would think that they are worse than downtown highways.
Hell, we have even sounded off against aspects which are in our own best interests. A subway would see higher ridership which would be better for the environment, but we cannot support it because it will mean the current network will be too busy. With this line of thinking, the only rapid transit this city would have is up to Eglinton and the Bloor-Danforth line would have never been constructed.
Perhaps LRT would be better for Scarborough. Believe it or not, I do see plenty of merit in it. But I also see plenty of merit in the subway plan as well. This isn't Sheppard we are talking about, besides both being in Scarborough they are apples to oranges. The subway may cost more and not be as good a value, but it also does some things better than the LRT plan and the government has wasted far more money on far worse transit decisions.