Yeah, the main shaft ( 😥🤤 ) would have gained stability from being horizontal, but the bottom has an awkward bridge with a nub on it that would possibly need supports. Also the tip is a bit smoother off-the-bed with concentric rings than with stacked layers on supports, so those things benefit.
It feels pretty sturdy, but it probably wouldn’t be hard to snap if I wanted to. I saw some other designs that printed the stylus in separate pieces, which would probably give the best final quality.