This add on is really good. Works fine and I see bright future with consistent development. Decentralised YouTube.
I haven't read the terms and conditions but I think there is also limitations in Wildspark. Videos with registered copyrights are probably prohibited as it will spark governments to take action.
I dont understand what you are talking about.
Linking to a youtube video is not copyright infringement. Not even embedding one in your website. It's perfectly allowed.
The only thing I can think of is if they embed an already infringing/illegal video, that will be shown on the Synereo website. But then it can just be taken down from the Synereo website.