> In theory the King can veto any law he wants. In practice he couldn't without causing a monumental constitutional crisis that would probably end his reign.

His mum Lizzie2 had no problem doing it without causing any problems:

https://www.theguardian.com/uk-news/2021/feb/07/revealed-que...?

https://www.theguardian.com/uk-news/2021/feb/08/royals-vette...

I think it's likely that Chuckie3 is continuing this grand tradition with impunity.