I have them enabled and travel all over Europe. Only in northern Italy have I received those (a test message as you sign into their cells for the first time after a while, looks like).
Other countries might implement them but I've never seen one. Instead they do the silly and expensive one-by-one spam. 🤷
Anyway, the way to get this given proper attention is to get in touch with your MP and ask them to raise the issue with your government.
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