(If you’re suggesting that snakes—even ones that are actually human animagi—can lie when speaking Parseltongue even though humans apparently can’t, where does that come from? If conversely you’re suggesting that snakes can’t but humans can, surely Harry’s failure to say 2+2=3 in Parseltongue is strong evidence against that.)
Does that matter?
(If you’re suggesting that snakes—even ones that are actually human animagi—can lie when speaking Parseltongue even though humans apparently can’t, where does that come from? If conversely you’re suggesting that snakes can’t but humans can, surely Harry’s failure to say 2+2=3 in Parseltongue is strong evidence against that.)