I think it could mean something depending on the situation, but you have to see the context, not just in INT numbers. If the QB is just a hot mess and air mailing passes, not understanding the concepts, not dealing well with the speed of the game, etc. That's going to lead to practice interceptions. If they are timid and unwilling to make throws (like Tyrod Taylor), that might lead to no interceptions, but also doesn't reflect well. You have to consider everything together, not just one or two data points.