The way she is willing to die on that hill that pretends that abuse from non-anonymous accounts is fine is breathtaking
I see it completely the other way around, and I'm not saying that because I'm posting anonymously.
Threats obviously should be taken seriously no matter what but the only real threats that have happened in this saga have been from Alice people, especially from Tone and her. the post they quoted wasnt even a threat: it was just somebody saying that they are pleased that a horrible person (which Tone clearly is if his twitter is real) may die a painful death when they eventually die. If you replace Tone with Trump Alice would celebrate it.
Where anonymous accounts and real account differ in my opinion are negative/untrue comments. I dont care if RandomUser#24225 says my mom is a slut, but I do care about it if someone I know does say it, that's what a human will naturally think. Plus in the case of celebrities anonymous accounts are irrelevant when it comes to libelous claims: they have no reach. However, celebrities have, so them posting abusing and false content like Alice did is a lot more serious than if RandomUser#259529 does it.
Even when it comes to threats real accounts are a lot more scary actually: when Tone posts about how he will take care of Ioan this will scare Ioan a lot more since he knows where he lives, lives close to his family etc. Crimes are a lot more common when a relationship exists than not (passion crimes etc). Some craze from wherever will likely leave him cold because he can't associate anything with this and will likely conclude that it's just some saddo that will do nothing anyway (not saying that no action should be taken against those cases obviously, but it would be overwhelming to not limit it, imagine if police would have to visit everyone who is "threatening" Taylor Swift)
It really shouldn't be hard to understand, and I'm sure Alice knows this herself. But obviously that logic works entirely against her (though currently it doesnt, because she is currently the coward behind alt accounts), so she will never stand up for this.