> the opposite would have gotten you a nice balance of polite and rude
You are transferring some or all of the responsibility of "choose not to be rude to strangers on the Internet" onto the recipient, who received rudeness only once others had already made that choice. How dare you say that we can blame the recipient of abuse for the choices of others to be abusive. You have no right.
If you choose to be rude to someone else on the Internet, you alone are fully responsible, without regard for any extenuating circumstances whatsoever. If you are having a medical event, seek in-reality medical attention and prepare an apology when your medical treatment has progressed far enough. If you didn't mean to be abusive, apologize, and then demonstrate over time that you're becoming less accidentally abusive. If you thought that the shield of anonymity on Twitter would protect you from being caught, you're no different than someone who throws bricks into people's windshields on the highway. No circumstance whatsoever sets aside your personal responsibility for the words you produced on the Internet.
It doesn't matter what they did, what their employer did, what their software did. It doesn't matter if they could be perceived as being abusive to you. None of that matters at all. There is absolutely no room for blame-sharing or blame-transfer here. There are no excuses for choosing to be abusive in this way. You simply cannot transfer one iota of responsibility here. That decision terminates at you, and you alone.
ps. I don't know if you're abusive or not, and I honestly don't care. This isn't about you, whoever you are. This is about your attempt to transfer the responsibility for abuse in part or in full from the abusers to the recipient of their abuse. That attempt, and my detailed refutal, is the sole focus of my comment. The English word "generic individual target within a plural set" is, unhappily, "you". Some confusion may occur, and I don't have the English skills to mitigate that at this time. No doubt someone will chime in with a better way to phrase this. I endorse whatever corrections are necessary to resolve the tense difficulty here.