How did you come to that conclusion?
There are hundreds of procedures with speed restrictions on waypoints.
I have several approach procedures with a waypoint at FL10, with a speed restriction of 250kts, a waypoint at 5000 with a restriction of 210, and a waypoint at 3000 with a speed restriction of 180kts.
(note the 'at' for altitude, not 'at or above')
If you set a speed restriction on a waypoint, it will be 'at', crossing that waypoint, not 'at or below'...
There are several procedures with the A320, with a Thales box, where you have to set the waypoints to 'at', or the ac will porpoise down to the next 'at or above' waypoint.
If no speed restrictions are placed on a waypoint, the speeds will default to the alt/speed settings in the box such as 250kts, at or below 10,000 ft.