I'm not saying it's a hoax.
But it would be really easy to pull off a hoax showing exactly the same stuff, particularly if you had help.
(1) Assistant flips the light switch. Quickly and quietly moves behind the filming guy- has approx. 6-7 seconds to do this (from 00:46 to 00:53), maybe 5 or 6 steps.
(2) Note the light starts swinging off-camera. The assistant stays while film guy moves to film hallway light switch, bathroom, bedroom. Assistant gives the light a good nudge.
(3) Assistant hides- I couldn't see any obvious hiding places. Maybe gets back behind film guy- difficult because of confined space and bathroom mirror, but if it's a hoax, they can make as many attempts as they like until they get a good outcome.
Or assistant could be crouched on floor between hallway light switch and bathroom door, perhaps to the right of film guy as he moves back towards main room (approx. 01:13 to 01:16), so on floor near the wall opposite the bathroom. I think there's enough of a blind spot.
Another option might be an assistant in the room above gets access to the light's power cord.
Genuine question: Surely not all US light switches are "off" when down? My (UK) hallway and living room each have light switches at two locations, so e.g. push a switch up for "on", if the other is in the down position, flip it up and the lights go off.
Anyway, easy (if irresponsible) to temporarily re-wire the light switch so light is on when switch is in down position, and cut one of the leads to the light if you can lift the floorboards. And a pull on the power cable (being careful to avoid any wiring you've left exposed) might be enough to get the light swinging.
There is a Wikipedia article on what I think might be this hotel,
https://en.wikipedia.org/wiki/Providence_Biltmore.
It's been used in several films/ TV dramas (including a supernatural themed one,
NOS4A2) so I wondered if the YouTube vid might be a bit of viral (and possibly unofficial) marketing, but if it was uploaded in 2014 it doesn't match with the NOS4A2 timeframe (S2, E6, The Hourglass, first aired 2020).