I’ve been using the beta of the Samsung Tizen and XBox clients for the last year and having the TV guide has been great but whilst these clients were in preview I was able to opt out and switch back to the previous version where this functionality was present.
As those clients have now been released, this is no longer possible and as you noted this functionality is missing in all clients that share this code base now.
I raised the issue back in April, after the Tizen client came out of preview, but unfortunately there hasn’t been any feedback 
I’m really missing this functionality myself and look forward to it making a re-appearance.
