Of course, sometimes the horses are already upgraded, but definitely not by week 1-2-1... especially the very fact of obtaining skeletons complicates the speed-boosting trick — you need a more thorough system of supporting the main hero with scouts, and still have to drag the main stack at 4 speed, especially considering that nothing worse or equal to this exists in other towns.
And in other towns, such speed (independent of secondary skills or conservatories) is more common by the second week:
Castle 9-12 but + stable
Rampart 13
Tower 11
Inferno 13
Fortress 13
Dungeon 11
Stronghold 11
Conflux 15
P.S. there is stuff to read and it lifts the mood, just without name-calling... learn restraint from Wicc :)