Tons of the reasons given for why congress can do things don’t really make sense, like civil rights amendments were defended with the reasoning that congress can regulate interstate commerce, and segregation affects interstate commerce. IMO that doesn’t make sense, but everyone goes along with it because these regulations are obviously good. If we had a good constitution, we wouldn’t need to make these weird excuses to do things that are clearly necessary for the public wellbeing, but unfortunately we don’t, so we have to make do and have any decision we make be randomly struck down by the courts when they decide they don’t like it anymore.