I follow someone - and he teaches people how to earn better to live better.
He suggested one should do an office job and involve himself in side business. That is very important for being financially free and work on the side hustle without worrying for money at the month end.
What do you mean by following?
there are some people I've seen firsthand doing two things at once, working in an office on a side business and actually being able to make the most of both patterns.
If that's what you mean, I think it's great in practice, because the opportunity to take two steps at once, is a pretty awesome skill.