The links are about leg length difference that are within the normal human difference, up to about 1/4 inch. Like the OP, mine is far more than that due to an injury. I am not hardcore, but I do 25-30 mile off-road rides a couple of times per month. I adjust my seat throughout the ride with my dropper, because too low makes for patella pain and too high makes for other leg pains. And, with my differences I am shooting to find a happy medium. My road bike never seems to cause issues, but my rides are usually under 3 hours due to a fused neck and my neck muscles giving out.

Either way, a little knee irritation is a lot better than coach surfing.