This thread separates out those that understand the sentencing procedure in a court, and those that don't.
Most people aren't going to understand sentencing procedure and law, it's reasonably niche, and if it's not something you've come across or work with, terms like is rapist's not being dangerous or there not being severe psychological trauma seem atrocious. But as people have pointed out they're legal terms, with legal definitions that the judge has to apply.
This headline could apply to cases up and down the country everyday. It's just one the daily mail chose to use to drive their agenda on immigration.
Take another area of life, that most of us are familiar with, for example, pregnancy. The term geriatric pregnancy sounds really offensive, especially to someone still in their thirties. But there's no point getting upset about, because it's a medical term with a specific definition. In the same way, dangerousness has a legal definition and it's quite a high bar. If it is considered that the sentence is too low that can be appealed.
I think people prefer to get caught up in the froth though.