That’s a very good point. That was definitely a turning point - it was shown all over the airwaves for hours, lol. Even with all her horrible faults, she proved she wasn’t physically up for the job.
The official reason was ‘dehydrated’ from the brutal heat or a touch of the flu I seem to recall...it was as joyous to watch as the first 9/11 Benefit Concert when all the firemen booed her..