Only 6 teams have worse run differentials than the Jays do: White Sox, Rockies, Marlins, A's, Angels, and Rays. That's 5 god awful teams, and a good team that has lost a lot of players due to injury/legal issues (and they'll still finish better than the Jays in all likelihood). Standing pat and hoping the team gets hot down the stretch would be an insane expectation based on what we have seen so far. The fact that they are 7 games back of a playoff spot with about 100 teams to pass makes it even worse.
The team has one of the worst farm systems in the league, a tax paying big league roster that stinks, and like 80% of the roster is not controlled beyond 2025 or 2026. The only reason you (and frankly me too) are afraid of a Jacob Waguespack, Corey Copping, and Billy McKinney trade deadline is because of the guy who would be making the deals. So if your argument is stand pat so that Atkins can't trade Jansen for a 26 year old starter in AA with a 92 MPH fastball, then I could see the logic in that. But sometimes you have to see a team for what it is, and if you're not trading Vlad, Bo, Gausman, etc, now, then you're guaranteeing the asset being diminished/wasted by waiting a year. We have seen how this story ends. The spoilers are the 2017-18 seasons.