Jetson Orin Nano, the new devkit from Nvidia, surprisingly does not have a hardware video encoder either, you'll need use CPU to encode video instead, which is extremely odd considering video-encoding is a common use case on lots of video applications.
Wow, I was shocked to see that. They don't even bother using CUDA cores to encode (less of an issue if you have unified memory like in Jetsons). Anyway it seems you can get four 1080p streams at 30fps encoded to h264 in CPU if you set it up right: https://www.ridgerun.com/post/jetson-orin-nano-how-to-achiev...
Only removed from the tegras, not the gaming cards.
But yeah if you were doing OBS streaming on your jetson, then the newer hardware won't have NVENC. Normally I'd say "but nobody is doing that" but someone (was) indeed doing exactly that, lol.
As mentioned it's probably a ton more relevant to embedded and robotics/computer-vision use-cases, which NVIDIA is really trying to push for (automotive etc). So it's still a surprising change and will be a pain for some people.