The point is the only thing this defense does better than last year is force TOs and it's not even that much better since the Giants game.
An N of 5, while only removing the outlier that helps your argument, is too skewed and small a sample set to make predictions about future production. If we remove the other outlier, the Chiefs game in which they failed to force a turnover, you have 6 turnovers over a 4 game span. That's good for 24 turnovers a season, which is roughly an average defense. To take a defense that was one of the worst at forcing turnovers, and turn them into average, would be remarkable.
The only games in which you needed the defense to force more turnovers is the Chiefs and Chargers game. In their third loss, to Denver, it would be very unlikely to force more than 2 turnovers. In their other lackluster turnover game, against the Rams, it was unnecessary.
Much more concerning is the lack of a pass rush against elite teams, rather than this debatable inability to force turnovers.