I’d say it’s more a case like me ( older driver ) that he thought no one would know that he’d driven without his card in, now he knows you know I doubt it will continue .
we come from a era when we thought we could do what we wanted , then there’s the never being pulled so why worry anyway
hopefully even though he’s getting on he’ll learn and that will be the end of it , I learnt , £770 fine makes you stop and think ( have a look through my posts fines somewhere ) and that was for mins without a card in / 1 offence , 5/6 offences is going to burn a hole in his pocket ( it was a % of your wage+ victim sur+solicitors fees ) and I doubt he will get a caution as I did .
hopefully you can sort it before it ever gets anywhere near a court ,courts are ok when your young , you just don’t care , but as you get older it’s not much fun
nb I’ve assumed he’s a older driver