Hmm... yes. I wouldn't say making a "fantasy" castle isn't following the magitech style, since it's already a fantasy techtree (eg. big wooden robots of death are certainly not from the real world). What does seem to be a problem.... is that you found the title to this project very misleading..... you were expecting the faction to have the same models except with more detailed textures rather than a complete change in art style, which I never really thought about. I was focusing on models that suited the name "tech" rather than copying the entire style of the original tech faction (except I did copy the fantasy-ish bit). If not keeping to the style and calling the faction "tech high quality" is too misleading or even considered incorrect by too many people, then continuing with this project under this name might not be possible.
If I was to continue the project under a new name, I probably turn it into another fantasy faction though, because I share the opinion that megaglest is supposed to have a variety of supernatural factions rather than sub-categories of tech.
You added a lot of stuff to the castle that is more like fantasy victorian or harry-potter ish
^^not quite sure that I agree with that comment since the main feature of this type of castle is conical towers.