[D] State of Watermarking in ML

As the title suggests, what do you think is the current state regarding watermarking e.g. in LLMs or image / video generation models?

Is there a lot of research done in this area or is is assumed to be unrealistic (I suppose a lot of methods would be pretty easy to circumvent..?)?

If so, what are the most promising approaches? Are there any good alternatives?

I'd like to get a quick overview. Thank you guys! :)

current easy image llms machinelearning research state think video video generation watermarking