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Plex Will Block Media Servers at Abuse Prevalent Hosting Company
(torrentfreak.com)
This is a most excellent place for technology news and articles.
Might be that the Roku app is/wasn't quite up to the same standard as the Android TV one. I also remember not liking how they handled something in their official Android app, but it's been six months. I honestly don't remember. I just have a reminder to check it out again next summer.
Ah, I can't stand advertisements so I couldn't put up with Roku equipment. Ads everywhere. And yeah, since "Roku OS" is proprietary, it probably didn't see the same adoption as more standard stuff (Like, even just FireTV sticks are Android at least, so the vanilla client works on those)