YouTube auto generated captain fails every time to filter audio.
Not once did it work. It is so bad that for years I thought the auto mute feature was broken and useless until I tried it on Disney Plus watching The Cable Guy and was amazed on how it filter every profanity. I then used it on Max and other services watching movies and TV shows.
I was even amazed ironically when it worked on the free DRM YouTube movies and videos that did not auto generated the captions. Now I use it on TV and movies and love it especially how I can hide the captions and only display when a profane word comes up filtered but I can see what the other words say.
I am also having this issue of YouTube autogenerated captions not working. Perhaps YouTube changed how it documents censored words and just leave a blank instead of the brackets. I tried adding a double space in quotes but to no avail.