My understanding was that Brandon literally helped make the genre with (what I like to call) "washing machine travel films" like Hong Kong Strong that are like you rolled and spun a camera through a city and then cut it with only match-cuts - they trigger my motion sickness pretty strongly and I literally can't watch them.
However, people loved it and he got a bunch of TV appearances out of it:
As previously said in the thread, he can make any camera from the last decade shine, and he has, and it's skill. All true.
What no-one else has said though, is that videos like this are film shoots. They're not holidays, or someone filming while traveling (even slow travel).. These videos are researched, storyboarded, scheduled, and then shot on location with a cast (him and his GF, but often he recruits locals and will direct them like he's shooting a narrative) and crew (IIRC he's mentioned hiring people to fix, drive, translate, liaise, etc). This is no secret, and his free BTS content shows this openly.
I think he sits in a fascinating space that I don't see a lot of professionals operating in. He shoots uncontrolled (and uncontrollable) situations, like markets and crowded public places, does so with talent and a shot list, but does so shooting relatively low-impact.
People shooting a travel doc will be shooting with talent in markets and in the streets but will have huge shoulder-rigs and will build up a little crowd of people who are just staring at the shoot and have to be choralled to keep them out of frame.
People shooting relatively incognito in a crowd are mostly doing it without talent or a plan or shot-list.
Not a lot of people sit between those two scenarios, and even less will tell you how to go about doing it.
I've paid a lot of attention to his BTS segments (which are excellent if you want to make videos like this) but as someone who travels for the enjoyment of it and shoots along the way, I can tell you that there is very little overlap between shooting while you travel and producing and shooting and editing a travel film.
I put myself on the email list for when he launched his course, and when it was released it was pretty pricey. Probably good value as he obviously knows what he's doing, but too much for me considering the differences of our methods.
Maybe it's an aesthetic thing, but his work looks dated to me now, including the Oppo piece. I understand why he still shoots these things like this, because he's appeared on quite a number of videos like this that are posted on the manufacturers channel, rather than his own channel, so it's obviously how he keeps the lights on.