I think it is a load of rubbish. Before retirement, when I was recruiting I doubt if, after reading their CVs, any would be offered an interview. If they had a good job I would suspect them of "itchy feet" and not trust them to stay for 2-3 years. They set up own business? No thanks would not fit into a large company structure's disciplines or give 100% if planning their next private venture. Hobbies like parachuting, hang-gliding, ski-ing - no thanks. Why should my company pay them to recover from broken bones. Such hobbiests applications were scrapped - beware readers regarding your interests when applying for any job.
But the show is meant to be entertainment by watching a bunch of egotists and back-stabbers in battle. Finally why is the chaiman, Alan Sugar, always late - bad example for apprentices who must chair meetings. Language not of real world: "you're fired". Show is well past it's sell-by date.