Such memos aren't written for people who were fired but the people who are left. Basically "you're lucky to be here, now get to work on reaching your goals."
Would it feel better if they hired a talented writer to write an heartfelt eulogy about how the loss of every single one of these 700 people makes their heart bleed tears of eternal sadness? Nobody would believe it. Everybody knows what it is about - they decided they have X people employed, and they want to have X-700 people employed. That's the beginning and the end of it. If you work for a small company, you will have personal relationship with decision makers, but in a corp where there are several zeroes in staff counts, that doesn't happen. So I don't think there's a point of being insulted about it - it's always going to be "we need less workers, and today it means less you".