I agree that all jobs need some training, but I think the termology is the real enemy. Like yes a cashier needs training but is it comparable to what is considered "skilled labor/trades" like qualified electriction, plumbers, welders, engineers, etc?
I think everyone should make a living wage and think the terminology is definitely used to oppress and divide but whenever I see these arguments it really feels like people don't see a distinction between the amout of work/time it takes to be competent in these jobs.