Why do you keep focusing on "water"? I don't get what you're getting at. You don't wash dishes with just water. Water is a very small and inconsequential component of the process.

You wash dishes by squeezing some dishwashing liquid on a dishwashing sponge, then pour hot water onto the dish being cleaned and leave it on as you clean, then you scrub the dish clean with the sponge while water flows over washing away what's left.

Then when there are no longer any visible stains on the dishes in question, the dishes are considered clean and you put them on a drying rack and/or pat them down with a towel to ensure dryness.

All i see going into the sink during this process is soapy water. I've no idea what is or isn't "grease" of that liquid. It's all just food waste. It disappears away into nothingness, as it should.

Why it could cause any issues all of a sudden when it never has and the only place people have ever mentioned it or claimed to do it is on the internet.

Ig it's like one of those "put an iPhone in a microwave" trolling things to get people to keep jars of dirt/trash/food waste and spread insects and/or disease?

Edit: Downvoted because you're upset at the mention of dishes?