Flew with one of these 'sociaaaal Meeedyah' guys once to the US. He was a friend of one of the flight crew along for the trip, at the time I believe he was a co-pilot on the A320.
Really nice lad, completely different persona to that which his channel would suggest. He was openly honest that it was started as a way to monetise the channel and offload 'merch'.
Whilst he had a full 'day job' which could contribute to his channel he admitted it just wasn't working as the effort required to produce the videos chewed up all of his spare time and the viewing figures weren't covering the cost of that time.
That coupled with the incessant criticism leveled in comments for every possible decision from the army of couch pilots was really depressing he claimed. Much to the relief of all company A320 Captains he ditched the channel and started concentrating properly on his job of flying paying passengers! The road to YooToobe fame is neither paved with money or gold!