maybe - but in general it's not strength that goes first, it's reflex speed. So in that case getting shorter to the ball could certainly help - it's sort of what Cabrera has done - shorten everything up and give up his power to maintain his abiity to get to the fastball to at least maintain some OBP. But look at Javy in the field - does it look like his reflexes are going?
The curse with the Tigers hitters seem to be 'being in between' - which you see looking at Haase, Maton, and some times Torkelson and the fix for that is as much mental as physical. But javy is so abnormal at the plate that it's admittedly hard to tell what's going on with him just watching.
Obviously some of these guys just can't hit MLB pitching, but some like Haase and Javy have shown maybe they can.