The English language is full of nuances, and if you ask anyone learning English, they'll agree. Furthermore, many people misspeak or speak incorrectly, even "natives" or locals. I think part of the culture of saying oh versus zero is because of television and movies. Hawaii Five-0 first comes to mind after James Bond. But Bond is British, so....
In other words, don't put too much emphasis on how people speak these days. For me, it's one of my pet peeves when younger people and those trying to sound "cool" say this or that was "the bomb" or "dope". I imagine the Google developers often use these words regularly.
There are many other words which are being "re-invented" on social media in the hopes the words eventually "stick". And don't get me started on the woke social media culture.
