Perfect 
Over on Threads, another user said thus:
Castration for sex offenders should just be a basic requirement.
It's not an unpopular thing to say; the urge to viscerally respond to a viscerally wicked crime is understandable.
There are many reasons why it's not actually a good idea, not least because, as I replied:
Well, it might stop the ability to reoffend with the penis being the principle weapon used in the assault, but there are plenty of ways of sexually assaulting people without using one’s penis as a weapon, and indeed it wouldn’t stop the ability for a physically stronger person to exercise violent control over a physically weaker person, which is mainly what most people who commit sexual assault are doing.
To which the other person replied to the effect that the death penalty could be the alternative.
Again, viscerally understandable, but in practice an even worse answer.
If you’re going to kill the rapist, they might as well kill their victim when they’re done.
Plus, see the already woefully low — for a variety of reasons, some of which have solutions — conviction rate for rape plummet even further, since the whole reason the death penalty was abolished in the UK was people who had served on juries were increasingly reporting that they did not want to be responsible for potentially sending an actually innocent person to the gallows.
Saying ‘yeah, cut their goollies off’ feels like good allyship, but it’s really not.
We need to improve the conviction rate; we need to find out from juries after an acquittal the details of what did not cause them to find the accused guilty. Was it because the evidence was lacking? Was it because prosecution witnesses were not sufficiently believable? Was it because they genuinely concluded the accused was genuinely innocent?
We need to improve evidence gathering when a report is made; we need to be better at preserving the physical evidence in a timely manner, we need to develop better interview technique to be more sure about what the victim, the accused, and any witnesses are saying in interviews.
We need to improve reporting; how cases of sexual assault just go unreported because victims either feel their complaint won’t be taken seriously, or worse, because they feel the trauma of going through the process to the end — with no guarantee of a conviction — will actually be worse than the initial assault.
And, of course, we need to do something about the atmosphere in which seriously disturbed people commit sexual assault in the first place; we need to deal with the toxic climate on our streets, in our homes, and on the internet where people take frustration as an excuse to be violent with their hands as well as their words.
All this should be perfectly capable for a sophisticated civilisation to achieve.