My device always shows the WiFi number. It’s nice to know since I live in an apartment building with shared wifi. The shared wifi is 4/5 and mine is 6 so I can see at a glance if I’m connected right.
I can’t imagine another reason it’d be useful though.
I live in the Netherlands too, but I’m certain this was an online service from the US. It’s definitely a minority of them but it happens nonetheless