Except you’re wrong. It is a tip because the tip is the service charge. The tip specifically is “we pay them less than minimum wage and your tip covered the rest of their service cost”. A tip AND a service charge, especially a service charge not levied because there were X+ people at the table, is double dipping on the tip. Both fees are for the same thing. Either increase prices or increase the tip(or pay your workers fairly and don’t expect me to subsidized the rest with these secret fees). Make them upfront and honest. This isn’t. This is a perfect invitation to say “you already charged me for the service, so no tip is needed, because that’s what it is for”.