Shes probably looking for something to say she has a "qualification" of sorts in social media marketing to tie in to her ideal reality of her linkedin profile.
Re-reading the blurb of course, it is open for anyone but more emphasises on being an upskill in your job, professional uncredited courses unrelated to CPD. A bit like a company offering the short version of an actual course, to tick a box, that doesnt lead to formal certification of completion.
End goal is most likely to pretend she has done a course with qualifications and pass it off as such as having a degree in pr, social media marketing, when has no such thing