Well yes, but if you have 20+ tabs open in a couple of windows, it's disruptive and time consuming to close and reopen all of them.
I initially thought Cmd+Shift Q would be better, but that is tied to System Logout.
Edit: after I RTFA, I see this is much like what the article suggested. The only real difference is that my approach prevents you from quitting from the keyboard at all.
[0] https://chrome.google.com/extensions/detail/edacconmaakjimmf...