Sorry about this. I hadn't realised that the camera button had been removed from Scratch.
(But like I say, until you brought this to my attention today, I hadn't noticed that).
I'll investigate to see whether I can restore the camera function in the version of Scratch I provide in Machine Learning for Kids (which I think is reasonable given that I don't have the publish projects functions the main Scratch has) but this may take me a little while, as the removal seems to be spread across a few different changes.
So sorry for the inconvenience this caused you, but thank you so much for letting me know.