Neither of the given examples were a search for alternative solutions to the problem. If you're after suggestions, that's cool - but when you're giving orders, call them orders.

No, but at least the second one explains the problem — or at least what is perceived as the problem — it's trying to solve.

Which opens up the ability for discussion of alternative solutions, or the criticism of there being a problem at all.

Which is a miscommunication, if the CEO is not actually open to such discussion or criticism.

The title of the article was "...Kill Company Culture", not "...Demonstrate that the Company is Dead".

If the CEO (or the intervening levels of company) are not open for discussion, the choice of email really doesn't matter. If they are, and the terse, uncommunicative, fiat email is sent out inadvertently, then that email is damaging.

It's not gathering opinions, it's conveying a decision. I'd appreciate the terseness as it values my time.

...maybe I'm just jealous of companies who allow you to work from home.

I don't necessarily expect to be asked for my opinion on policy, but I'd at least like to know what problem the policy is solving.