From there marketing material, it sounds like they are using a(n incredibly flawed) theory that it is illegal to download a torrent, but perfectly okay to stream the same thing.
This won't end well for them.
From an end user standpoint it’s an interesting distinction. If the end user doesn’t make or order any copies, there’s a reasonable argument that the end user hasn’t infringed any of the copyright holder’s exclusive rights.
From a provider/facilitator standpoint, it’s a garbage argument. The person originating the stream is making an unauthorized public performance and probably also has made unauthorized copies.
From an end user LEGAL standpoint, it's actually illegal to even download copyright-protected content without the permission of the rights holder (Streaming services have already obtained permission of the rights holder to deliver it to you, and therefore provide the permission by proxy - but they HAVE TO HAVE THAT PERMISSION BEFORE THEY STREAM THE CONTENT).
That's how it works. It doesn't matter if it's a torrent or a service like this one, if what they deliver to the end user doesn't have the permission of the rights holder (either directly or by proxy) then it's illegal to download it.
Oh, and the end user HAS made a copy simply by downloading the content, even if it's never viewed or otherwise used. THAT'S what the law looks at.
This is why this "service" is patently illegal. Intercepted and redirected streams is a hack and IIRC, that's a legal no-no, too.