Can't see video because imgur is being a shit, but I don't think I could see the video even if imgur was allowing me, just from the thumbnail I can tell that I wouldn't be able to see a thing.
The rear lca has the wheel end joint pressed into the knuckle, I've seen a few of those go bad on foresters, it should rotate freely, but axial and lateral play are a big no-no. Even if there is no noise, play in that spherical joint means bad alignment.
https://www.whiteline.com.au/product...63412&sq=24130