Minimum wage should be the minimum wage for anyone who has not given up their constitutional rights (I.e. Convicts).
Then you are advocating equal pay for unequal work.
How is it fair that a mentally disabled person who only does 1/10th the work of folding clothes, spending most of the day in a catatonic state, receives the same pay as a stable person who is working very hard in their clothes folding?
Would it be fair if your company hired someone who slept all day at their desk, doing a job similar to yours, but sub-par, and received equal pay for it?
Goodwill is performing a charitable act by employing these people, who are otherwise unemployable, and training them in retail and customer service skills. Shame on you for bad mouthing them.