In any case, I think I made a mistake suggesting specific improvements to the memo; lemme pop off the stack a bit:
It's not okay to publish a document to your coworkers that will predictably make them feel unsafe. Full stop.
When you want to express an idea at work, you need to engage in empathy, and try to express yourself in such a way that your coworkers will still feel safe with you. If you can't figure out how to express an idea without hurting your coworkers, then, yeah, you don't get to express it unless you figure something out :/ That's an appropriate workplace policy, and I'm comfortable with the general idea that freedom of expression is subject to some conditions. I know not everybody agrees with that prioritization, though!
More importantly, I'm just tired of articles like this one dismissing the social consequences lens outright. There's more than one valid issue being raised in our community right now, and the importance of one doesn't invalidate the others. Let's have both conversations: how to enable expression of less common ideas, and how to ensure that we express them empathetically. If we approach the problem thoughtfully, I think we can optimize for both :)
(BTW I edited this comment a lot during the first 30 minutes, and pretty significantly changed its contents. Sorry if that ends up being an issue!)