We did most of our bike travelling in the 1980s and about the only thing around then was Jupiter's Travels, though I didn't know that until we were on the road and only read it after we'd returned, when to be honest I disliked the book. However, after coming across and ejoying Dreaming of Jupiter just a few years ago, I re-read the original too and found that I now do enjoy it.
In recent years we've predominantly travelled by sailing boat and nowadays there are an ever increasing number of you-tube vloggers amongst the cruising fleet. We've met many of them and become good friends with a few, despite which we've done little more than skip through an odd one or two of any of their videos; they're just not very interesting. However, for more than few, those videos are how/why they can afford to live the lifestyle that they do and believe me, they work seriously hard to produce them. A 'watchable' 20-30 minute you-tube video sounds to be over 20 hours of work, excluding the time that you've already lost/wasted in frigging about with the cameras whilst doing/fixing whatever's on the resulting video. I suspect the 'aggravation' factor on a motorbike must be even worse, as it's got to be a sight easier to dig out the go-pro and set up shots on a moving yacht rather than a moving bike?
Yes, there are a few 'hey, look at how cool I am' offerings, but the only ones of that type which remain successful/popular have a wife/girlfriend who looks exceptionally good in a bikini (their 'followers' are soon lost, but new ones will replace them) indeed, I know two who find and pay local nubile totty to play the part of 'crew'. The majority though are trying and generally succeed in producing a decent insight into the lifestyle (stylised/glamorised to a greater or lesser degree) and tens/hundreds of thousands of people enjoy watching them. But and it's probably the same 'but' as comes across here with regard to motorcycle travel-vloggers: Their target-audience is most definitely NOT other travellers - you don't have to have done much yourself to see through them - they're primarily producing videos to entertain people who through choice or circumstance want to 'travel' & 'adventure' vicariously. So, the makers earn a few £/$/€ - perhaps enough to make the difference between making this or the next trip and not, whilst the viewers are getting their 'adventure' fix and neither's doing any harm to the rest of the travellers.

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BobnLes