I think the issues with the Jays are process related. Like, there's no overall problem with hitting against RHP, but there are definitely key times where you would want to be able to bring in a Lefty off the bench to force a change on the mound where you might get the advantage for the next two hitters after the lefty. Those situations come up more often than we really think, but may not show up as drastic differences in wRC+ in the lineup over the full season.
That said, there's so many 1-offs that are screwing the Jays over. Bo is hitting lefties like absolute s*** this year, when his career numbers are completely opposite. That's a thing that can rear it's ugly head in key moments of games. Ditto his defense that overall seems to be better on the season as a whole, but when he makes a mistake it's a guarantee that it costs the team runs.
Simple plays like fielding a bunt down the first base line and not looking to both 3rd and 2nd before throwing late to 1st (like wtf Vlad.. that was just so dumb ...), baserunning blunders that run themselves out of scoring position, or plays in the outfield like Teo over the weekend where he's basically given up on a ball and it hits the wall at head height 5 feet to his right when he clearly thinks it gone... bad plate appraoches that you just have no idea what the batter is looking for and he flails away at balls well outside the zone when there's guys on base instead of keyholing a location.
The problem with the JAys is not talent, it's 100% between the ears. Espinal thought he became a slugger and forgot how to use the entire field. Vlad's oppo power is gone and cant seem to get balls in the air anymore. Teo has torrid stretches of mashing baseballs then goes beyond cold for a week where it looks like he has no idea what sport he's playing. Lourdes, the opposite of Vlad, has finally found out how to use the opposite field and now couldnt pull a ball for power if his life depended on it. Tapia just straight sucks and has dreadlocks for brains.
The team is either red hot, or ice cold. That solid floor of consistency is absent. Over a season, the hot streaks might be slightly longer than the cold streaks as we've seen so far. If the Jays get into the wildcard, its 50/50 if they steamroll their opposition or get shut out 2 straight and go home.