Are stainless steel dog bowls really better than ceramic or plastic?

r/dogs threads we read repeatedly frame stainless steel as the most hygienic option: non-porous, dishwasher-safe, hard to break, and not prone to leaching. Ceramic gets praised in the same threads for being heavy enough that dogs cannot push it around, with the caveat that it can chip or crack. Plastic bowls are the least recommended in those discussions, particularly for dogs prone to acne or allergies.