The dissolvable packets of a dishwasher detergent are very different than the forever microplastics that people are worried about. Those are designed to be durable and last while the detergent pods are made to dissolve.
That said the powder detergent is great and SO much cheaper per wash. Also you can put some in the prewash for better washing.
Or, hey you spent all day on this for a dish that is “alright“