Bilateral (two limb) lifts are essential. BUT REMEMBER, most acute sports injuries occur on what foot or one arm; sometimes out of sheer back luck...most of the time due to skeletal muscular imbalances or a weak link in our kinetic chain. Meaning, pressing 315 for reps won’t prevent injuries if one limb is 20 % stronger. I see this a lot in my coaching business, particularly in arm and leg length and segmental lean analysis screening. Athletic training is not body building and anti rotational exercises like this really work scapular control and the internal + external obliques. Anti rotation exercises prevent injuries by strengthening deep core tissue to resist rotational forces, which improves functional sports strength and boy control. If one side needs to apply force and the other side needs to resist force, unilateral training becomes just as significant as bilateral training. THE LACK OF FOCUS ON UNILATEAL TRAINING IS A MASSIVE REASON WHY PRO ATHLETES ARE BREAKING. THEY DO NOT DO IT ENOUGH. Try 3-5 sets of 3-6 reps to be rid of your weak arm.