AWS fired someone for spending too much time with the family (twitter.com)

Likely an April Fools joke by the Twitter user.

"Your fired" is misspelled and HR-noncompliant. This letter would subject Amazon to legal difficulties. If a C-level sent it, it would likely result in their termination. So it's probably an April Fools joke.

I hate April Fools pranks.

And I'd sooner believe AWS was launching a moon base at re:Invent this year than Andy Jassy would use the wrong "your" in a letter.