Good idea. I've confirmed all the leadership / tech leads listed on page 12 are still at Google.

Can someone with a Twitter account call out the tweet linked above and ask them specifically who they are referring to? Seems there is no evidence of their claim.

It's also possible Google removed names of people who left. It's not really a research paper, more a marketing piece, so it might be possible (I don't think they would do that with a conf paper)

We'll see if the person making this claim responds with specific Gemma developers that have left. Otherwise, I think it's safe to assume they are just lying.