Comment by nomilk
The transcript is still there, yt just made it harder to find.
On the video description (the text under the video) click 'Show more'. Scroll to the bottom -> 'Show Transcript' -> it will appear to the right of the video (and you can use ctrl + f on it).
IME this works for ~90% of yt videos (i.e. most, but not all).
Note that yt being frustratingly juvenile, symbols are put in place of words yt considers swear words (this caught me out a few times when using ctrl + f to find sentence that contained a swear word or homonym of a swear word).
Oh very nice, they just moved the location. Thanks for pointing this out!