The post I was responding to said this helped them cure sleep apnea, but it was being heavily downvoted. Almost as if people don't want to hear a health-based solution may work. You lashing out adds proof to this.
The two people you've accused of "lashing out" at you weren't doing that - you wrote a sarcastic comment (for the reason you've explained, seeing the comment you replied to get downvoted - but that context was gone once the comment you replied to stopped being a downvoted one) and they weren't sure whether or not you were being sarcastic, hence their replies to you. Neither of their comments suggest they have anything against healthy living.
If you're not trolling, you've genuinely just misread the room. One of them just said "I'm guessing this is irony." and surely you would agree that your first comment was ironic? You were using irony to mock the downvoters, you don't actually think "How dare you propose a healthier lifestyle instead of a machine or app to solve this problem", as you clarified in your next comments, but to strangers online who don't know you they have to guess (or, as they did, ask) whether you're being ironic/sarcastic or not.
It's incredible you can interpret somebody asking if you were being ironic - in response to a comment you wrote intentionally to be ironic, but without making that clear - as being "passive aggressive".
