And how much remains of the old Simpsons interior? Should that have been left untouched in perpetuity? Even if it gets in the way of conducting business?
Actually, had it survived with a certain degree of integrity into the "preservation era" (and the more recent, the more likely), it probably
would have been accounted for. Though when it comes to "getting in the way of conducting business", there's the post-Eaton's saga of Eaton's College Street to consider--but by your logic, they needn't have even bothered to be forced into keeping *any* of the Deco interior. "Private", you know. Allow for market forces. (Yeah, sure, and that nearly resulted in the Carlu's demolition.)
In fact, given your pretentiously cynical pro-materialistic arguments, maybe you should be arguing against virtually
all of what preservation's become over the past half century, hearkening back to the days when men were men and they had no compunctions about demolishing noteworthy old works on behalf of noteworthy new works (cf. the TD Centre pavilion--or for that matter, BNS replacing Cawthra House kitty-corner). Come to think of it, modernist preservation should itself be an oxymoron, given how the style's founded upon our not being martyrs to history. And, of course, organizations like this
http://www.sca-roadside.org/
ought to be a complete waste of time, by your logic.
And for that matter, forget mall retail--there's building types such as schools and hospitals where overwrought "public good" arguments have been quite commonly used to condemn the old holus bolus--I've already raised Riverdale Hospital, but there's time-honoured cases like 999 Queen as well.
By such logic, this demolition was a good and welcome thing.