Why are people still using Zwifts 8-minute FTP test as a benchmark for performance tracking when its been widely criticized for being inaccurate and outdated. Is it really that difficult to implement a more comprehensive and scientifically-backed test, such as a 20-minute all-out effort or even a ramp test, that would provide a more accurate representation of a riders true FTP. The 8-minute test is far too short and doesnt take into account the nuances of human physiology, and yet people are still using it as a gospel to dictate their training and racing strategies. Whats the justification for this, and why are Zwift and other platforms still perpetuating this outdated methodology. Is it simply a matter of laziness, or is there something more at play here.