Yeah. The safety of the message is underwritten by its state sanction.

In what way is this statue state sanctioned?

In addition to the other explanations (it's in the heart of London and not being removed), it's also advancing the government position of deconstructing national identity (for Britons): https://britainmagazine.co.uk/diversity-built-britain-50p/

It's on display in downtown London dude. Also who do you think paid for it?

It was erected surreptitiously in the dead of night. That does not imply state approval.

As for who paid for it, I don't know, possibly the extremely successful and wealthy artist who created it.

If you have any evidence to the contrary, by all means present it.

Anecdote, a close family member of mine is a director of arts for a very large city in the US. They typically install/uninstall at night - she's told me this is especially important with cultural or otherwise edgy pieces.

It not being taken down yet implies state approval (4 days now?). It's on Pall Mall ffs, right near a statue of a King

It's not like the wealthiest city in the UK is lacking in resources to do something about it.

It's not government funded or planned. Although the establishment seems to like it unlike that one on the law courts.

Banksy was never subtle, but this one is extraordinarily ham-fisted. Very meme-able though.

Given the timing, seems more related to domestic politics.