According to Steve Simmons of the Toronto Sun, the Blue Jays needed a top of the rotation pitcher and the Cy Young Award winner, R. A. Dickey, would fill that need. The price, as we’ve always known, was expensive. Very expensive.
The big decision at the time wasn’t whether to make the deal, but which pitcher the Jays would include to complete the trade. The Jays had 20-year-old Sydergaard and 20-year-old Aaron Sanchez, two hard throwing prospects — a first among equals situation for the club.
The decision was made then that Sanchez was the pitcher to keep and he was thought to be just a little ahead of Syndergaard at the time.
http://www.torontosun.com/2015/10/31/with-anthopoulos-gone-shapiros-takeover-of-blue-jays-complete
That's the kind of ridiculousness you can get with hindsight.
Sanchez, Syndergaard, and Nicholino were all regarded as potentially good-to-great MLB rotation starters when the trades were made. Nicholino was considered the lowest ceiling of the 3, but had value as a lefty. Sanchez was considered the highest ceiling of the 3 because of his power arm and big time curveball. Syndergaard was slotted firmly in the middle. He was not a sure-fire ace level prospect at that point.
Calling back to the trade now and pouring more fuel on the fire because Syndergaard blossomed is asinine. In hindsight the Pirates never would've traded Jose Bautista for Robinson Diaz knowing what their career trajectories would've been. The Reds never would've included Encarnacion in that Rolen trade as a throw-in if they had known what he'd become, nor would the A's have let him slip back off waivers after Toronto waived him (not that Toronto would've waived him in the first place). Detroit probably doesn't trade Devon Travis for Gose if they know that Travis would hit as well as he did to start the year.
In hindsight no team would ever make any of the deals they did that turned out to be poor or not as good as expected if they had some magical crystal ball to know how everything would shake out.
You can say that some people didn't like the Dickey trade at the time on the principle of giving up 2 high end prospects, but let's not pretend for a minute that those people would've been any less pissed off at the time if Sanchez was included instead of Syndergaard, or even that it's guaranteed that Sanchez doesn't turn out the way Syndergaard has while Noah ends up in Sanchez' situation if he stays in Toronto.
Steve Simmons is a hack, and he generally looks for the most controversial, hackles-raising aspect to a story he can because it gets him attention and gets his stories clicks and dollars spent on newspapers. I wouldn't be surprised if he didn't believe half the ridiculous bull**** he puts out there. Then again, I wouldn't be surprised if he believed every word of it, too.