Neither. The team is installing a brand new offense with new terminology, and there are bound to be wrong routes, QB misreads, missed blocking assignments leading to rushed throws, etc. I know that the defense is also new, but lots of picks happen from offensive mistakes, like throwing to the wrong spot. Even a confused defender in the vicinity of the bad throw can make a pick.
If we're still seeing this when the 2nd preseason game rolls around, I'll be concerned about the offense (though not necessarily QBs, as it all depends on whether the receiver was doing the right thing).