The text starts "Freedom!", meaning that he can do whatever it is that he wants. That he chooses to engage in work emails doesn't make it any less free, IMO.

I love my (non-Google) job and love my family. So, I'm happy on Fridays when focus changes to family, but I also often love Sunday evenings when focus turns back towards work.

Not everyone has a dreadful, barely tolerable job...

Having boundaries does not mean your job is barely tolerable. Nor does a lack of boundaries mean you are better at your job or appreciate it more.