If any section, subsection, sentence, clause, phrase or portion of this article, including but not limited to any exemption is for any reason held to be invalid or unconstitutional by the decision of any court of competent jurisdiction, such decision shall not affect the validity of the remaining portions of this article. The Council of the City hereby declares that it would have adopted this article and each section, subsection, sentence, clause, phrase or portion thereof irrespective of the fact that any one or more sections, subsections, clauses, phrases, or portions be declared invalid or unconstitutional.