As someone who works with children and young adults, I think the relevant concept here is "growth mindset", or it may be something else?
This cuts across different levels of wealth. Trying different things is fine. But I've seen plenty of people, who can't put hard work in, constantly "big up" their apparent overnight success in their latest new vocation/career/venture. It's insecurity.
DB said BB quit footballing (despite having a huge leg up into Arsenal and other clubs) because: "He said, 'Every time I step on to the field, I know people are saying, This is David Beckham's son,' and if I am not as good as you, then it is not good enough.'" In contrast, his brother Romeo is fine to toil away at some low level football club. Fair enough if BB doesn't like football but there's a visible pattern across his careers. He wants to be at the top immediately.
From direct quotes I've seen, BB talks each new "career" up to the media and sometimes public in self-important ways, as if he's an accomplished master already.
This young man has a need to "launch" all of his sub-standard attempts as finished works at high level: glitzy announcements, monograph book (traditionally the body of work of master of the craft) from someone who dropped out of first year photography school with no efforts to build up a decent portfolio after that, launching a celeb chef cooking show (with his name in the title as said celeb chef) with 62 actual industry professionals who have to teach him basic sandwich recipes behind the scene, etc.
To be fair it could just be his family PR machine. I'm sure other rich celeb children his age (eg actors) with PR machines do the same, but not to such a hubristic or obvious level.
I do think people are being harsh. There's no harm done from one young man's insecurity. He may yet succeed in future if he learns to let go of this "overnight success" mindset.