I'm not concerned because I'm not sure I would call our offense "one-dimensional". We lean on the run because we are averaging six yards per carry. We run the ball an average of 47.3 times per game, which (if you only count our top three running backs) comes to less than 16 carries each. That's why we have healthy running backs, and yet a HIGHLY successful rushing attack.
I understand your point though, and if we were UN-successful through the air on the only 17 attempts we make per game, then YES I would be concerned. But Fromm leads the SEC in yards per attempt (among actual QBs who play regularly), ahead of even Locke at Missouri, Etling at LSU, Stidham at Abuurn, and well ahead of Hurts at Alabama. He is tied at 13 for TDs with Nick Fitzgerald and Jake Bentley, but has half as many interceptions as Fitzgerald and only as many as Bentley. Fromm averages five more yards per game than Jalen Hurts, per game, but I don't hear anybody complaining about 'Bama being one dimensional.
However, I DO like to hear safeties dissing our QB and passing offense. It tells me that - weirdly enough - nobody is paying any attention to one of our TEAM STRENGTHS - yes, I said that.
So, long story made short, no, I'm not concerned in the slightest.