Technically they could market "the Joy-Con 2 sticks uses Hall Effect for better precision" to convey the implication that they will avoid drift without admittin

Technically they could market "the Joy-Con 2 sticks uses Hall Effect for better precision" to convey the implication that they will avoid drift without admitting culpability (and being factually true about better precision). If they were using HE, they likely would have noted it IMO.