Earlier quoted context omitted.
Is it reasonable to say that in many (not all) parts of London, English no longer functions reliably as the default public language, even if most individuals technically "speak English"?
Your comment reminded of the youtuber who changed the shop signs in his video into scary non-English script: https://www.youtube.com/watch?v=UPZxMVpnCBM Edit: Changed to link I like a bit more
Certain people would rather fearmonger though.