And who are you to decide what is and isn't a qualification to be taken seriously?
-I never said anything about the noise or the amount of traffic, so nice strawman you've set up there. I was specifically referring to what it does to the streetscape below.
-The scale of the guideway is only marginally relevant when the Gardiner Expressway is on the table. Through its elevated portion, it is hardly a Highway 401-style "superhighway", it stretches only 24 m across as it crosses York Street. Scale becomes more relevant the wider you make your road. At such a low level, if your theory about scale was true, then the area under the former York Street offramp wouldn't have been so unpleasant.
-None of your comments made specific reference to Hurontario, if you care to look back through the discussion all of it is in dealing in big picture thoughts, going right back to using an example of a bridge over a highway as an example of how elevated rail isn't disruptive (itself a strawman). If we are speaking specifically on the issue of Hurontario, then my favoured approach would be to abandon the entire Toronto commuter belt as a Biblical level urban planning tragedy*, so I wouldn't lose any sleep over an elevated guideway running over a street like that, or any other suburban stroad you care to name. However, since the discussion deals in big picture thoughts, and since this forum has previously proposed various proposals such as building an Ontario Line El over Parkside Drive, a residential non-stroad, consideration must be given to all contexts. The elevated guideways of the Vancouver Skytrain, for example, are just under 8 m in width, as per Google Satellite View. The Els of the New York Subway are slightly wider than that (the three track El over Broadway in Brooklyn, for example, clocks out at 13.18 m. If I measure just two tracks, I get 9 m). Do you get the impression that the streets under the Els, as important transport links as they are, are exceptionally pleasant? And that's with generous amounts of sunlight seeping through!
https://www.google.ca/maps/@40.6952...4!1sutx3MCgg-3e1jJCpDtEz7Q!2e0!7i16384!8i8192
Els are useful as a cost saving measure when compared to tunneling, but they must be used sparingly and carefully.
* This is hyperbole, before you again qualify what should and shouldn't be taken seriously.