I’ve lived in London all my life, so have many previous generations of my family, Londoners know this congestion charge was introduced to make money, anyone inside the zone needing delivery or any works carried out is paying the cost as it’s just added to quotes.
Plus as it actually made congestion worse in all areas surrounding it because the entry point and exit are bottle necks with emission levels at record highs year after year.
As for the proposed extension, it’s been on the cards for the last 10 years because it’s such a cash cow and we know TFL are bleeding money due to covid so need massive bailouts to keep running a decent service.
So far it’s been rejected and long may that continue.