No? Water is a "chemical". The contents of your digestive tract would probably sound scary to most people as well (hydrochloric acid in the stomach, chenodeoxycholic acid in the intestine, among others).
Not really. The surfactants/detergents get removed during the rinse cycle. The concentrations are also relatively low. Dishwashers often have a "rinse only" cycle so if this is a concern for you, run one of those after the main cycle.
Running a second rinse cycle will still put you ahead so far as water consumption, because dishwashers use much less water than hand-washing.
Tbh, there's a part of me that really doesn't want to try and productize it. I really love the idea of building an icon service that pulls in as many developers/designers as possible. OS has been a huge part of my career, and being able to give back can feel pretty fulfilling on those down-days.
Thanks for the summary. Do you have a list of the 50 or so databases you unsubscribe from? Do you have any metrics around how many such databases exist in total?