Well most new students will probably understand such stuff is more advanced so they're not going to learn it right away and if they ask about it you can always tell them that such stuff is more advanced and that they will eventually learn it but if they've been there for awhile and they don't see any indication that they will learn such stuff, such as if they don't see more advanced students doing such stuff, they might become disgruntled about their training and leave.
Some people might be specifically looking for an art in which the vast majority of the techniques are kicking techniques because they use their hands for certain stuff, particularly stuff that requires good fine motor skills with your hands. As such they might be afraid of using their hands in the martial arts because it could interfere with their fine motor skills that they need with their hands. So they might be looking for an art that is primarily a kicking art.