My ds had finished college by 17 as a summer born.
He was working from 18 in a start up as a software developer.
I'm not entirely sure how joining the military (can't anyway due to disability) or volunteering in public services for 25 days would have given him life chances.
Not having time out of school whilst I fought his ehcp via tribunals at a cost to the tax payer (that he got anyway!) would have given him a better life chance.
More access to nhs services would improve his outcomes.
Better education for pupils with send and less acadamisation (semi privatisation if schools) would have given him a better chance of managing secondary education.
This government live under a rock although they'd be more useful under one right now.