The future outlook of both OTA and TVE doesn't look good for self hosted DVR solutions. The final "form" of ATSC 3.0 will likely have encryption on most stations and/or individual programming and TVE seems to be heading in the same direction as more channels are being DRM protected.
Thankfully, ATSC 1.0 will likely be around for at least a few more years and many TVE streams will continue to operate without DRM, but how long will it last and will it be a slow death or quick?
I believe it will likely be a domino effect in which the major broadcasters begin to sunset ATSC 1.0 and move to encrypted 3.0 with the smaller ones following suit.
The same will likely be true of TVE encryption.
The only way to stop this is a major push back from the public, and even that may not be enough. Perhaps there is a way for ChannelsDVR to log watch history and share that information with the networks to track advertisement statistics, though I'm fairly certain that most users wouldn't welcome this change and I doubt the devs will take this path.
Making sail on the open seas is another alternative. While I do not condone it, I do see the merits of it as a form of protest. I fear I'll soon have to have a dozen different subscriptions and use a dozen different apps just to enjoy the same content I can access in ChannelsDVR (all of which is legal and paid for).
TLDR: Enjoy ChannelsDVR while it lasts in this form, in a few years there may be no way of owning your own DVR equipment and freely storing/accessing your own recordings.