If someone in politics is happy to settle at mere minister, then I would question their ambition for the country.
Yes, I am aware there is a paradox there.
E2A: In a political party, you can always spin the line about "happy to serve" in the safe knowledge that in reality you could get to lead.
But in the Farage Fan Club we know (although it's not a given that Jenrick or Braverman do) that only Nigel will ever be leader. So basically they have settled to serve in hell rather than rule in heaven.