He doesn’t look lean or muscular at all imo look around his tail and neck no taper. This is my personal opinion a lot of my snakes I consider overweight as well it’s hard to keep them at a perfect weight especially when they start out overfed. I am basing my experiences(with ball pythons) of 5 years feeding weekly and the last 3 years far less frequent feeding schedule. While this isn’t 30 years I’ve noticed a big enough difference in my collection that I have come to realize I kept my own snakes(not just ball pythons) WAY overweight for years. Ball pythons shouldn’t be shaped like blood pythons.
Also imo feeding males every two weeks is over feeding them as well couple that with big prey they CAN get overweight. Also in my opinion
My main point for all of this is we tend to overfed ball pythons and I think that is what cause a lot of them to fast or hit “walls” You will still get snakes that fast here and there but I believe a less frequent feeding schedule will result in this happening WAY less often.