That's not how I read it.
I read it as trying as carefully as possible to start a discussion about having a discussion about a topic by many deemed to be sensitive. And change doesn't have to merely be cutting something, as you suggest. It can be replacing something ineffective/unfair with something more effective or less unfair.
There's literally nothing in that sentence which says "we need to remove/cut down on all programs related to subject $x". I'm not sure where you're getting that from. To me, your response to this fairly harmless email seems overly defensive. Are you acting rationally based on what has been said, or are overreacting based on things you assume to be said?
Maybe this would be a good time to (re?)-read the original email[1]?
[1] https://assets.documentcloud.org/documents/3914586/Googles-I...
"We need to have an honest discussion" or the dreaded word "review" always prefaces dicing up some policy, usually without an adequate replacement.
Encouraging immediate, unthinking, righteous and moralistic condemnation over rational discourse on issues close to the friction points of various cultural/ideological conflicts, is quite a dangerous thing to do, even if its satisfying and cathartic (that's precisely why its so damn dangerous).
Stated differently: Someone has an opinion that the system currently in place doesn't fully work and wants to discuss change.
If we're not allowed to invite to a discussion, how else do you suggest we facilitate change, or investigate the need for such change?
You don't seriously imply that there's never a need to review the basis for existing programs? Or are you just ignoring the general principle of things "because diversity"?