Depends, if the speech is IRL-first and video-second then a sign language interpreter is better and cheaper than installing some sort of concoction to display l

Depends, if the speech is IRL-first and video-second then a sign language interpreter is better and cheaper than installing some sort of concoction to display live subtitles (which have to be typed by a paid steganographer). But in any case, deaf people still have the need to practice reading their language, so removing it from everywhere except IRL conversations might be detrimental to them