It is difficult to provide an exact number or percentage of motorcycle riders who have dropped their bikes at a dead stop with people watching, as it can vary depending on numerous factors such as the rider's experience level, riding conditions, and individual circumstances. Dropping a motorcycle at a standstill can happen to riders of all skill levels, including experienced riders.
The weight distribution and balance of a motorcycle can be challenging to manage when coming to a stop or at slow speeds, particularly if the rider is not familiar with the bike's handling characteristics or is caught off guard by unexpected circumstances.
Fortunately, dropping a motorcycle at a standstill usually results in minimal damage to the bike and no injuries, aside from the rider's pride. It is a common learning experience for many riders, and with practice and experience, riders can become more proficient in maintaining balance and control in these situations.
It's important for riders to be patient, practice proper riding techniques, and continually work on improving their skills to minimize the chances of dropping their bike, whether at a standstill or during motion.