My rationale is more about practicalities than death bed confessions. I find the storage and weight advantages of a collapsible hose outweigh the very remote risk of plasticisers being picked up by the briefly transiting water.
If I was paranoid about plasticisers harming my health I would not drive a vehicle because they are leaching out of the car plastics all the time, especially when hot, and breathing them is unavoidable. Ever noticed a misting film on the inside of your windscreen? This is caused by plasticisers leaching out of the car plastics and condensing on the screen, where dust and pollen stick to it.
Of the many risks that modern life involves using a non food grade hose for a few minutes is not one that I would apply a philosophical argument about the existence of God to.