The birthday boy is taking the cupcakes to his ABA therapy session. ABA is short for applied behavior analysis , it is therapy for children on the autism spectrum.
This man is complaining that a low income mom with an autistic child bought cupcakes at the grocery store for a class of other autistic children to celebrate her child's birthday.
First of all, most places don't accept homemade baked goods. Second of all, it's grocery store cupcakes! Third, he is autistic and a fucking child!
A child whose parent no longer has the resources she obviously needs! She was approved to receive SNAP benefits (food stamps). This means she is so low income that the government has deemed it appropriate to help. Do you think they just give out food stamps to everyone? He is literally celebrating poor children starving.