Further down the article explains:

> Joachim himself declined to provide his last name or workplace because his employer does not want to be associated with the campaign. POLITICO has verified his identity. Joachim said his employer has no commercial interest in the legislation, and he alone paid the costs associated with running the website.

Yeah, a quick search says there's 21000 men aged 25-34 in Aalborg. Let's say an equal spread of 2100 men in each age, how many would be named Joachim? Probably a few dozens...