Speculation: I suspect your initial comment drew downvotes because it's pretty insubstantial. Yeah, requests for notifications are a annoyance. Commenting on it isn't likely to promote any kind of worthwhile discussion, and whatever discussion it does engender is likely to be off-topic as well. While not always successful in practice, HN members do tend to value substantive, on-topic discussion.
Your second likely drew downvotes because it's explicitly against the site guidelines.
> "Please don't comment about the voting on comments. It never does any good, and it makes boring reading."
This place is only as good as we all work to make it.
You started with a sarcastic comment that was irrelevant to the topic at hand, then complained abusively when just one person signalled their disapproval with a downvote, then when a helpful commenter politely explained why you were downvoted, your response was to abuse the entire community. In this instance at least, nobody's conduct has been close to being as destructive as your own.
Please, if we want this place to be better, the first step is to take responsibility for being good citizens ourselves.