I have mixed feelings about it. On one hand the wheels being labeled “xxx Travel” makes it simple to figure how far it will go. On the other hand it’s the loss of a teachable thing that the diameter of the wheel times 3.1 (a close value of Pi) will get you the travel. That’s a skill that works forever for anything that is round. (and you can use 3 for a value for Pi for third graders, it’s close enough(*).
So in the above example, the 200mm Travel wheels are about 65 MM in diameter. Which makes sense since the hub in the middle is 44mm in diameter and the tire is about 10mm thick.
And it’s not encoder ticks per second, it’s encoder ticks per revolution.
(*) Most often the use of wheel diameter is the desire to “drive straight for some distance” and roboteers soon find that they can’t drive straight by “drive for so many seconds” or “so many ticks”. It does create another teachable moment about friction, field floors not being flat, manufacturing tolerances, etc.