Edit: I feel like every response I'm getting is: 'but texting is expensive, especially with foreign contacts'. Sure, but do you really need to send 100 texts in the odd hour that Whatsapp is offline sometimes, or can they wait?
Parent wrote 'This is a big issue in Europe', which is what I'm responding to. I live in Europe, I have foreign contacts. This should not be a big issue, because for pretty much everything that can't wait, texting or calling will be worth it. If it isn't worth spending some money to get in touch with someone, it can probably wait. This may be an actual issue for a very, very small number of people. But the majority is just exaggerating because they feel disconnected without being able to send Gifs to their friends for an hour.