In fact "coaching" is something of a plague today. Everyone wants to be a coach: for photography, or yoga, or to get ahead in your job, or even just in life.
Many remind me of those books or courses offering to teach you how to get rich on the stock-market or elsewhere: the real method is selling books to suckers. The "life coaches" have managed to have happy fulfilling lives by not doing any of the things they recommend, but rather by recommending them.
Also, while one might suggest that the qualifications of people teaching in schools, colleges, universities et al may have inappropriate qualifications, the role of the institution is to ensure they have some, and to oversee their behaviour. Many coaches have nothing to offer but their smiling face.
Of course, some will be good. When Pete Sampras hired Ivan Lendl as a coach (I think?) some years back, he knew what he was paying for. Look at the work, indeed.
Just don't mistake social media fame for talent... or for the ability to share something useful, in a useful way.
But, but... maybe all we really want is for someone famous to tell us we're doing it right? Hmmm...