Apologies for the length of this post. Listened to the
first video. It seems a little sensationalized by the
young narrator ["training wheels when Armstrong won his first tour"] obviously to increase the impact but the main evidence seems Femke Van den Driessche in 2016. But its good he says this could destroy the sport - he is right.
As far as Visma are concerned, can we look at more recent evidence than WvA's CX bikes in 2016? At the
2023 Tour I found the UCI conducted 837 tests before Tour de France stages and 160 at the end of stages,
none of which showed a rider using a bike with a hidden motor.
UCI carried out 997 checks for motor doping at 2023 Tour de France
Then I also found this story posted before the 2024 Tour:
Mystery professional rider believes there will have been motor cheats in the past but the UCI introducing strict and frequent testing has likely ended any chance of getting away with it
road.cc
Lots of nice quotes in this story, such as this one from the anonymous pro mentioned ...
Below is Cancellara's attack on the Koppenberg in RVV 2010. Its not a long effort - less than 2 minutes which is anaerobic. We know Cancellara was a monster who could produce huge watts for shortish durations. Boonan can be seen grimacing before the attack so was already at his limits so I am not as convinced as you seem to be:
Fabian Cancellara attack 2010 Ronde van Vlaanderen
So I remain unswayed. I will believe there is substance to motor doping in the peloton when it is a major story to dwarf that when Armstrong was busted. There needs to be a lot more than Cancellara and an obscure Belgian CX woman who was caught and banned in 2016.