It's the "I want to hurt Leigh's feelings but in a vague way and through social media so I can walk away and can feel very superior from a distance" for me.

Nah, come on, you come into their space on their post acting all judgmental... own your opinion on this mysterious thing. Be bold. Say your piece or mind your own business.

At least manage some decency and finish the conversation instead of dropping some mean comment like a troll and then ghosting like you actually said something of any value. Leigh has been perfectly kind in trying to understand you.