Come on now Arthur, I didn't say it was the primary reason for banning it from archery season, there are numerous reasons.
The draw or cocking: (movement) you all say its not an issue, but anyone that has spent more than a season in the woods, knows it is.
The holding it back: No physical or muscular activity involved in a xbow, and is cocked, locked and held there till the snow melts in the spring.
The multiple shooting positions: standing, sitting, kneeling, sitting on the ground, and prone, all braced! Hell if you want to get fancy you caneven shoot it over your head, from the hip, behind the back, and yes up side down standing on your head!
Thats3 things, each an issue in itself.
Then there is the shot: First off its fired from the shoulder the same as a rifle, second: once the bolt is layed in the track, that is imbeded in the stock where it has no way to be torqued or no where to go except stright down the track once fired, combined with therelease or trigger also imbeded in the stock eliminating the same anchoring point, You have taken the archer out of the picture!

To me those are enough reasons to keep the xbow out of the archery season, unless you are Handicapped and can not shoot a bow!