So, the problem with the stats and your conclusion, is that we don't know.
Do the rams have the fewest TE targets, because we have the worst TEs in football? That is your premise I guess, but I don't think that Higbee/Everett combine to be the worst tandem of TEs in the NFL.
If the offense had no one open and the TEs were still not catching the ball, then you might have a point. If you were an QB and you could throw it to a fast guy open 20 yards down field or a slow guy open 5 yards down field, which would you pick? Does that mean the slower guy on the shorter route isn't open?
Ultimately, there are a ton of potential variables and causes, but you have locked into one, that you have had as a conclusion before you even looked up the data.
