I kinda laughed when I watched that show. I built my bikes about a year before the regulatory committees became aware of it. Then of course, they have to throw the vague unsubstantiated "Lance Armstrong might have done this" into the mix. Geeze, what is behind that statement?
And yes, it is easy to do (if you have the money).
Back in 2014 (or earlier), the biggest problem is battery capacity. But that has come a long way in just a few years (my battery from last year weighs 1/3 of my battery from 2013).
That comment about weight is a farce. It is easy to build a bike below the UCI minimum. Build one 1-2 kg lighter than the minimum, and then add 1-2kg of motor & batteries. That is easier to do now than 3 years ago.