A 13 or 14 year old being encouraged to carry out a criminal act, knows they are doing wrong but they also are potentially being manipulated or coercively controlled. "If you don't do this then they will make you kill yourself. They deserve it because they hate you so much" etc etc. They have been radicalised.
It also doesn't mean they fully understand the lifelong consequences of a conviction. If mummy and daddy always bail them out of bad behaviour, why would they? They are still at an age where the concept of earning your own keep is rather alien and by all accounts, again mummy and daddy will bail them.
However their ambition to do X or y job may not be possible with a serious criminal conviction even as a minor, because there will be other candidates without that. (Of course they will just be able to blame it on being trans).
The joined up thinking between knowing you are doing wrong and understanding that this might mean child protection orders, being potentially removed from your family, hours of police interviews and court cases and then lifelong implications for a 14 year old (who may well also be autistic or even on puberty blockers so perhaps particularly immature).
The whole point here is that their age means they can be exploited and not fully aware of the consequences even though they are complicit.
Otherwise we have to start believing that 14 year old girls targeted by grooming gangs for sexual exploitation somehow 'deserve it' or 'want it' too.