That's well observed and exactly my issue, he'll only travel in sleeper cars on trains, and then in the same breath he berates tourists in 3rd class who aren't "proper" travellers like he is, suffereing for his art.
In Ghost Train he attacks Michael Palin for "not being a proper traveller", assuming he has a make up artist and a man to carry his bags. Paul, I couldn't give a fig, he's a fantastic travel presenter.
And then he likes to spot people reading his books, and takes too much pride in revealing himself as "the great author"! Why he has to mention that is beyond me, just pure ego I presume.
It's a shame because as I say, his accounts are so well written and (generally) a fabulous read.