Depends on your country and how it handles copyright and DRM, but being illegal doesn't necessarily mean it's immoral. The mere concept of watching or downloading YouTube videos through an alternative client certainly does not keep me up at night with guilt.
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This is definitely true. Though I am yet to see a case like this being tried in a different country and YouTubes own terms of service says any disputes will be tried in the US (I think California?). So I think YouTube may not even be able to sue in a different country even if they wanted to since they are also bound by their terms of service.
As I understand it, it is legal and it would be very difficult to make it not legal for youtube.
Basically, as long as these just forward the video from youtube without making copies, it is not copyright infringement. That only leaves the user agreement, which is limited in what it can do (it is not a properly signed contract).
PS: They could put a stop to it by requiring registering before watching videos but that could cost them more normal users than it gained.
@MajesticFlame @AgreeableLandscape @sexy_peach @saba Random coincidence: invidious was contacted by YouTube's legal team: https://github.com/iv-org/invidious/issues/3872
I was just returning here to say this. Yes, I am eating my words a lot sooner than I expected. I wonder how a court would rule if invidious had the resources to defend themselves but that will likely not happen. They just won't have the money to pay top notch lawyers and escalate to the supreme court.
I still think technologically speaking, invidious should be no different from a VPN/proxy, so it should be legal.