It may be narcissistic, but it all depends on how the content is produced imo.
Just look on youtube. Packed with guys in their 30s and 40s, with some who make a living of it, some more successful than others, by putting out videos when they're basically out doing the exact same things as we do every single week. Why people are interested in it? Do not know. I know that I'm watching a hell of a lot of golfers on youtube though.
If I had the means and time, I think I actually could consider doing the same thing. One part probably some sort of vanity, but it would also be to hold myself accountable and to make sure that I stuck with the plan to reach my goal. You may not reach the goal, but as long as you've stuck with the plan, no shame. I don't know how many plans I've written down for my own golf on how to improve, just to wake up in the morning and go "nah, tomorrow", and that's that plan gone.
But again, having said all this - I'm not starting my own youtube channel for people to follow my journey to scratch.
when its comes to dropping the C bomb in either English or Swedish you're a +10 handicap mate