Now I don’t know if they ever changed anything since launch. But if you judged the max speed by the first flying saddle you got you didn’t actually experience anything close to max speed. Pals that have their saddles unlocked at a higher level (usually) have a much higher speed when mounted.
A pyramid is built bottom to top, not top to bottom. That’s also one of the strengths of the ISO format. You can add/remove layers for arbitrary granularity and still have a valid date.