I don't think you are supposed to use a SAFE hose for a nice taste, but rather that it is not supposed to leach out petro-chemicals as bad as the garden hoses.
I had a friend, when he was 19, worked for auto sales lot. He helped the mechanics at times and he would wash his hands in Benzine. Everything was fine and dandy until that day he was diagnosed with leukemia. Dad grew up eating food cooked in aluminum pots and pans, all was just fine until dementia got him. Lots of cancer stories can be told, fine and dandy all along, no problems, then got sick.
With all the things we cannot avoid in the world it would be wise to avoid the things we can easily avoid.