For reference sign language can also be turned off by clicking Sign Language underneath the playback screen.
There a number of signed programs available ( obviously does not suit those who do not need the service but wide access is important) See information here https://www.bbc.co.uk/iplayer/help/questions/accessibility/sign-language
I do not work for Samsung or make Samsung Products but provide independent advice and valuable contributions.
My Device- S21 Ultra 5G ( SM-998B/DS ) CSC= BTU , 12GB/256GB
One Ui 5.0,Android 13 .