(a) The executive commissioner may not adopt rules restricting competitive bidding or advertising by a license holder or registration holder except to prohibit false, misleading, or deceptive practices or to prevent a violation of this chapter.
(b) Rules to prohibit false, misleading, or deceptive practices may not include a rule that:
(1) restricts the use of any medium for advertising;
(2) restricts the use of a license holder's or registration holder's personal appearance or voice in an advertisement;
(3) relates to the size or duration of an advertisement by the license holder or registration holder; or
(4) restricts the license holder's or registration holder's advertisement under a trade name.