The minimum wage adjusted for inflation is at an all time low. So automation is happening in spite of record low unskilled labor costs.
First, I’d like to know where you got the inflation-adjusted minimum wage data. Second, a 30% wage increase, either in real or monetary terms, is going to cause dislocations...period. Finally, substitution of capital for labor occurs for reasons other than wage rates. Machines always show up for work, no shift understaffing issues, no vacation or maternity leave, no personnel issues. Hassle costs alone would cause a shift.