The taste is usually the Rinsing Aid, aka Drying Agent, not the detergent. It's an additional chemical is sprayed on the dishes towards the end of the cycle, to aid drying without creating spots. The chemical remains on the dishes.
Our rinse aid is disabled on our dishwasher.
I tried to do some research on the safety of the chemical, but couldn't find anything online
https://www.jacionline.org/article/S0091-6749(22)01477-4/ful...
It's evident that some of those trusting people are willing to make or save a buck while putting you at risk.
At the end of it, people should probably make their own assessment as to whether they should put themselves at risk. And I don't mind drying a handful of dishes if the alternative is to lace them all with surfactant.
These products all have surfactants as the main ingredient, and surface tension is what literally define us.