Two weeks ago, he threw 2 picks against Ten. The week before that (when they were still in the hunt for a first round bye), 3 against SF. It's not that outdated. Even yesterday he was 14-26 for 214 yds. One great pass and then one great catch and run by Yeldon (on a pass that was behind the LOS) the only things making that remotely respectable.
He was not the reason they scored so many points. The Defense scored a TD, gave them the ball in the Red Zone, and stopped the Steelers on 4th down twice for good field position. Plus Fournette had a very good game. Even with all that, Pittsburgh out-gained them by almost 200 yds. If Pittsburgh doesn't make a half dozen incredibly stupid decisions in that game they win walking away.
The perception that Bortles is nothing to fear is not an outdated concept.