Originally Posted by
Trakhak
That saddle is likely flexible enough that you're sitting in a shallow trough that is effectively level where your weight is centered. That's why riders can often get away with using a saddle that's tilted down a couple of degrees.
The less flexible the saddle, the closer to level the saddle will be, assuming that the rider does enough mileage for the bike fit to matter. I can't recall seeing any pictures of pro riders with their saddles set more than a degree or two away from dead level, if at all.
In the world of cycling, if we are talking about the whole of bicyclists as a group, pro riders are outliers. Most riders don't have the same physical attributes as the pros do.
I'm not disagreeing that saddle tilt to an extreme as we've seen in a few photos here is very likely due to inexperience/poor fit. But I don't consider the fit characteristics of professional riders to be a benchmark that should be followed by most riders. Plenty of folks out there may actually need some tilt one way or the other to ride extended mileage due to circumstances that can't be determined from pictures online. To say that saddle flexibility and levelness necessarily go together in the manner you described doesn't account for those whose bodies require a different approach.