The problem is probably a legality thing. In Germany for example AFAIK people need to be told they are recorded and must accept to this. So by implementing such a feature, you need to adhere to local laws, which differ from country to country and may make it way to complex and dangerous to implement.
Yes, look at the ars article, there are even links to the patents. https://arstechnica.com/gaming/2024/05/jury-finds-activision-blizzard-liable-in-23-4m-patent-infringement-case/