Yes, you do have duty, but not in email. Full disclosure, I'm a Googler. And, thankfully every verbal complaint or concern I've made has been addressed and resolved.
Also, it's worth noting that no Google employee could say any view except this one in this thread without getting fired. (Likely even if the alleged terms weren't so egregious.) While you may be one of 65,000 who feels listened to, we can't know how many have been silenced.
It's not about you. When there is a claim of, say, systematic rape at a place, it is both understandable and really offputting for random people to say "I work there and didn't get raped." If anything, it comes across as kind of tone-deaf and toyish.
