There's a lot of dog whistles in these TERF/fascist-lite spaces, but one of the early items JKR advocated for was sending trans women to men's prisons. You should be able to look this up, it's well known. Would you not agree that that is wishing harm and/or death on trans women?
I'm sure there are plenty more dog whistles that have happened after that one that I'm not versed in, but hopefully that gives you a jumping off point in your fact checking. I'd recommend videos by Shaun, Jesse Gender, and ContraPoints if you are interested in more compilations and perspectives.
Used to work commissary in a local county jail (basically food delivery). There was a trans woman there that the county didn't know how to deal with. She had fully transitioned, was extremely passable. The state doesn't allow you to change your gender on your ID, so they stuck her in a men's jail. Her first week there she was assaulted and spent 2 weeks in the infirmary, then they decided to put her in solitary confinement to keep her safe. Her choices were literally get beaten to death to go into solitary, something that's considered literal torture in many parts of the world. She was there for petty shit, too, like possession of marijuana, iirc. Fuck transphobes, and fuck anyone advocating for women to be sent to men's prisons.
Even for those extreme cases, it's understandable to wish for that, but I'm not sure it's healthy for the one wishing. Speaking only of people who don't believe in the death penalty, and are breaking their moral code due to an extreme aversion, maybe it is healthy as it may be cathartic; maybe it is not as it may reinforce rumination, stressful feelings, etc. Maybe it is healthy as they can reach a slight feeling of justice or equilibrium again in the world; maybe it is not healthy because they'll feel they themselves committed a moral transgression pushed by the atrocities of these people. I don't know, maybe it's different from person to person.