I think with any video on how to do some thing, it needs to start by giving the date and location, as what may be permitted today, my not be permitted tomorrow, and it needs to be perfect, even if we may consider running a channel just above the sockets is OK, that's technically not within the zones, so one should not publish a video showing it being done. And of course one would need permission of the house owner, normally when a promotional video is made, you need to in some way pay the house owner, normally a reduction in fees.
Even the TV programs get it wrong, I have watched one or two builders from hell or similar, where the presenter says they are not allowed to do some thing, which is incorrect, many times people on these forums are picked up because the approved document says some thing but that is not the law, and also errors with regulations where they state you must have RCD protection but fail to point out not for a 12 volt door bell supply.
So is he brave, or foolish making the video? And why did he make it?