Yes, but there is also the other possibility: injured players are moved to IR more quickly now, because the season is not critical. Players often play injured -- see Weber, Shea for a prime example, Montembeault, Samuel last season, or even Wideman, Chris, for a recent instance -- especially when teams are hunting for a playoff spot or actually in the post-season.
Given that we are not trying to get into the post-season, the bar for moving a player onto the IR could be significantly lower, and, as a result, it would look like we have more injuries when, in fact, we are actually getting them treated more quickly.
This is totally hypothetical, though, it seems like a viable theory, but I have no evidence to back it up (nor any evidence to discredit it, for that matter).