What makes the Discover 125 Drum Brake uncomfortable for some riders and perfect for tall riders?

While riders of different heights have chimed in on the ergonomics of the Bajaj Discover 125 Drum Brake. The bike has also been praised by some tall riders for its spacious seating position and is one of few bikes in its segment that can comfortably fit their frame. They like to talk about how easy it is to hold onto the tank and the well placed footpegs. While other tall riders complain about feeling cramped, they complain about knee positioning and handlebar height. Such marked discrepancy has prompted discussions on body proportions, riding posture, and even a race to develop theories for riding a bike with slightly different measurements of at least one dimension from perhaps one production year vs another. Often the debate extends to how other bikes in the segment do, and DIY modifications to make it more comfortable. It is also suggested by some riders that even the comfort level for tall riders is batch / year model specific in case of Discover 125.