Doesn’t need to be real time as in streaming “live” during the flight. It just needs to have a normal video frame rate so you have a good sense of motion. The video files could be downloaded to Earth at any time after the flight rather than streaming during the flight. That’s my nitpicky nerdy answer. If by real time you just mean normal looking full frame rate video, then yes I heartily agree :)
The thing is, video cameras can be tiny these days and the files aren’t even really that big especially when they’re compressed. So it seems to me that a video camera would have been a small or even negligible extra burden on the design yet would have had the huge benefit of giving us flight video of the surface of friggin Mars!
Elon Musk would not have skipped the video camera...
maybe if elon gets his way we will have starlink sats in mars orbit and have video!!!, not sure just what the lag time between mars and earth is..