Slippery slope / Straw-man fallacy. One is to do with tying the minimum wage to a livable wage. The other is just large numbers for the sake of trying to win an argument. No one is arguing for $150/hr. The argument is simply that you aught not to be able to run a business and extract a profit if the cost to do so is employing people at such a low wage that they require governmental handouts just to pay rent and eat food. Given that, imaginary large numbers like $150/hr or $1500/hr do not come into play and thus do not need to be considered.