Well, there are many who use whatsapp here. But it’s definitely not universal.

Holy smokes…that is annoying. Why in the world would Apple do that to their phones and customers?

Can you please elaborate more on what is annoying? I’m genuinely curious and I confused. Thank you!

I live in the US and I had no idea what the OP was talking about. I am in the same boat as you with the blue vs green bubbles thing (but now I know thanks to the comments) and am also an android user. I was today years old when I found out I apparently send green bubbles to iPhones.