Eddie, do you have any evidence to support your claims that 'Octopussy' is "infamous," or that 'Thunderball' is "not a super-popular Bond film," or that "few seem to know" what a thunderball is?

Have you even seen 'On Her Majesty's Secret Service'? Lazenby's accent is perfectly understandable throughout. The dubbed dialogue was dubbed because Bond was impersonating the voice of another character. As for why Lazenby wasn't re-hired for the next film, the reasons are more complex than your unflattering oversimplification.

It feels like you wrote a hastily-researched article on a subject you know little about.