Some scenarios
1) an apprentice/mate/jobber for years who goes self employed after years, gets a 5 day course in, passes and becomes a dilligent, professional and quality work
2) an apprentice/mate/jobber for years who goes self employed after years, gets a 5 day course in, passes and becomes a money chasing, serial contraveanor and with no concience.
3) A person who responds to a 5day course and unknowingly nearly/potentially or really kills people with bad workmanship and design.
4) A person who responds to a 5 days course, passes and becomes a self employed electrician, dilligent, comitted etc and runs a sucessful honest business.
5) An experienced electrician who has all the qualifications, time served, years at colledge, who does not give a flying F@}k
6) An experienced time served electrician who decides to only be employed and continues to provide excellent workmanship in a timely honest manner for his/her boss.
It does not matter how you get qualified, it what happens afterwards.