How do features like Youtube's Auto-Dub get approved all the way to consumer end ?

Ok so the idea isnt bad. A video in non-eng language is made accessible to global audience now as it is dubbed in eng...intention is good

But the implementation is so beautifully sh*t. Like its default by design and also not toggleable in 1 click...

Im pretty sure such features go thru many pairs of eyes before being deployed to end consumers,

How is it that no one pointed out its faults then ?