Curiosty
you are kinda missing the point (though to be fair we both got sidetracked). None of them said “Im sorry I dont drink from fountains” That is my point
There the problem was suspicion of having done A”Z by those who knelt. (Or even prostrated themselves according to some miforshim) According to ALL miforshim drinking from a public fountain is ok. Even arguablly with kneeling/prostrating if it isnt a sign of AZ. At a public fountain when the person leans over slightly is your reaction, hmmm I bet he is used to leaning over his head in prayer to A”Z? Assuming that isnt your reaction, then there is no issue with drinking from a water fountain