https://news.ycombinator.com/item?id=26637365 is a surprisingly good primer for this, if you'd like to understand where they're coming from. Notice that "name-calling" is explicitly called out.
Having full confidence in the mods is actually a dangerous thing. I too had full confidence in the mods at one point. And, like you, I wasn't aware that I was using HN in a way that HN isn't designed for. This is a friendly reminder that you may get lucky and escape notice (HN is quite big now), but it's a matter of time before you'll get a stern talking to; the penalties only increase from there.
Don't take it personally, if it happens. It's not. And if I'm mistaken about any of this, I will happily eat crow and apologize, along with hanging up my hat of "issuing friendly warnings" in general. You could email them and ask, but the inevitable outcome is a "yes, calling people trolls and liars is off topic here; HN is for intellectual curiosity, which is a delicate thing," along with attracting attention to yourself.
In other words, don't let other people get to you. It's not worth it. Even if they are lying or trolls, you can simply say "That's not true because X" and leave it at that.
Not my place, but unfortunately there's no contact info in your profile, so I can't email you. I'd rather risk saying it here than watch you kick a hornet's nest. Being rate limited is no fun, but it's the inevitable consequence of such behavior; penalties only increase from there.
It's easy to get heated, so a quick edit + heading outside is often the cure, for me at least.