I don't believe anyone is telling you to p*ss off. You have a lot of people in this forum who have been here for years and have a deep understanding of how things operate and try and share that information through suggestions (teach others to fish vs. fish for them). However, the forum contains so much information and is a lot to ingest for someone relatively new or not historically active, that it's understandable that sometimes people talk past each other.
If your question is to ask the Devs can solve the CNN issue through new coding to get it back into Channels natively, the consensus is "No" the Devs have not signaled any plans to expand integrated solutions to replicate the ease of TVE. The ability to add custom sources basically opened things up to the community which has developed numerous sources (ahc4, ADBTuner, PrismCast, Fast Channels, etc) so the Devs really focus on improving the exiting infrastructure (I won't go down the Apple vs Android debate however).
As @chDVRuser mentioned, TVE has been labeled as BETA and is not guaranteed to be supported forever. With TVE continuing to move more towards DRM, the alternative sources are becoming the standard for most users in some form or fashion, so pursuing restoring TVE sources is not a good use of anyone's time and better to focus on the alternative sources to get back in. And although the Devs do weigh in from time to time on topics, they do not commit to responding to all inquiries here and they are a small team so responding to all outreaches is not guaranteed. I will say sending a PM to a specific Dev I've had better luck but again, no guarantee.