if that's the case, then why would they exclude it? Makes little sense.
Why should Home users have that kind of easily accessible power is more likely the reason. Getting to the Group Policy Editor is simple, getting the information on what registry settings do the same thing takes a little more effort.
Just another arbitrary decision by a corporation in order to maximise profit in some way ... or more likely, "We know how to protect users from themselves, think of all the support we'd have to provide for Home users when they screw up their Group Policy settings or forget their Bitlocker password, that'll cost us bucket loads, just remove those items from the Home edition."
What's the reasoning behind not having Bitlocker available in Home editions?
Don't normal users have data to protect from prying eyes?