I can find myself in WanWizard's post here.
A bit offtopic, but I understand why they're taking legal actions against these CI+ solutions in 'open'-platforms such as e2 receivers.
Last week my employer sent me to the US to do a training over at google to implement their drm solution called widevine.
Their widevine drm system is used for protecting http-based streams (ott) for android, ios and html5-based players.
The demands from the content-owners and studios are getting more strict and they become more aware of the piracy risks these days.
So the google widevine team is working closely with chip-vendors to obtain level 1 security, which basically means the video is being decrypted in a secure trustzone area of the SoC and there's a secure path from that zone to the hardware a/v-decoder.
For example web browser-based players (html5 with mse/eme) do not offer level 1 encryption yet (with the exception of ms edge on windows 10 using the latest intel gpu's), which means they're using a software-based drm library/plugin (level 3 security), which is of course much weaker.
And many (if not most) content-owners and studios are aware of that so they restrict their content only to be served in sd-quality when there's no hardware solution available, like SkyUK for example.