You're completely right when you say "nonsense". I'm the founder of StyleFeeder. I've worked for five startups before this. Being a founder is a unique experience characterized by a constant feeling of being angry all the time and being emotionally drained by your work. Don't get me wrong - I love what I do, the people I work with and the company is doing great, but it is fucking hard. And I feel that all the time as 'founder' whereas I never did as an 'employee.'
I've also had conversations with other founders who independently used the exact same language to describe how they feel about their companies.
My simple rule: if there's nothing there when you start, you're a founder.