By the way, GPT 4 when asked to critique this listing immediately found the problem, and produced a corrected version as a bonus.

Bard feels like GPT 2 to me. Even GPT 3.5 can solve COBOL FizzBuzz correctly.

PS: Just to check that GPT 4 is understanding the problem and not just regurgitating something it saw, I asked it to solve the problem in different ways, such as unrolling the loop or avoiding the use of the MOD function. It can do that too.