The thing about Tom and Marcus that gives them edge in addition to integrity, talent and genuine empathy, is the fact that they experienced poverty as children. Jack didn't. Tom and Marcus will be able to remember how they felt and empathise with children today. They will understand the anxiety, fear, confusion, humiliation, the longing and the hunger that you feel as a poor and hungry child. They will be able to get straight to the heart of the matter. The other good thing in this case is that they are both men and Marcus in particular will be an idol to kids and especially black boys.
This is so important because cooking is still seen as a woman's job. These men will be able to help normalise the idea of men cooking and bring those skills to boys who might otherwise feel unseen in society or maligned and written off as not talented because they maybe struggled at school.
This is the toxic bootstrap ethos again though. I hate that assumption that you can just pull yourself up by your bootstrap and achieve success through hard work alone. It does not take into account the fact that you might be a black boy living in an inner city slum. You are a nice kid but life is tough. You only have one parent and you are living in poverty. School is difficult and you don't get the one to one help you need as the teachers are over worked and under supported. Eventually you might be coerced or feel peer pressure to join a gang/take drugs/commit petty crime, it's more fun than studying and there is nothing else to do. Your mum works all hours and doesn't have the time to encourage you to study or learn how to cook. Society judges you automatically based on your skin colour, you are automatically viewed as a criminal and why should you respect the police when they are known for brutality and racism? The media and politicians, monarchy and ruling classes are inherently racist too and have created a nepotic system to keep the jobs and money at an unattainable level. They make no secret of viewing the rest of society as plebs and worker drones either so again why have any loyalty or desire to do good?
With all that and more against you, it is little wonder that the bootstrap ideology fails. People like Jack and her tory pals conveniently and frequently overlook their privilege.