Here is the thread on RTSP for v4: V4 Cam RTSP Update
The amount of people that come in the forums and say that a support person said they are “removing” something is mind-boggling to me. Spoiler, nothing you said has happened or is going to be happening.
I think you should post your setup for your RTSP recording and have others help you troubleshoot it. There a ton of people running RTSP using the v3’s and now they are using the v4’s.
Which means your setup is wrong and NOT the firmware as you state. People are actively using it right now. Post your issues, those here will help you.
Otherwise, your posts are not true and your protests are falling on deaf ears.