It's worthless of going into details.
This guy "knows" what was happening in some shop in Italy, what material was used, how no one checked what was done in the shop, what Sir FW said, what mechanic who took it thought and hid...
I'm not defending anyone, but this guy made most boring video ever based on nothing. It's not even his opinion, but his private story about whole new series of events that never took place.
What Senna was or was not doing in the final moments is one thing, but what were Williams mechanics doing, and this guy speaks it like he read their minds... I mean, he is using "we don't have pipe" story in order to explain Senna's final actions.
No one ever proved when column broke, and despite regretting Senna's death so much, I still say, that it broke after impact, when the chassis broke too.
There was absolutely no reason for even iron, hardly steel or titanium pipe to broke since there are no forces that would be able to cause snapping while car is driven. Try it yourself, find iron or steel pipe with walls as thin as few mm, cut it in two, connect it with wider pipe, weld it, and than try forcing it with some bar to see how much force you'd need to twist it or bend it.
It was always easier for people to blame Williams than to blame Imola organizers for not doing a thing after 1987 and 1989 crashes, and nothing after Ratzenberger's death. Show had to go on, money had to flow.
I have no proof, but I say, whoever welded Senna's steering had done proper job, since it broke after impact.
He died because he hit wall with no protective barrier. For same reason, Berger's car got in flames in 1989, and if Berger had died, the reason would not be error in tank of chassis manufacture/adjustment, but an impact in concrete wall.
I've spent my childhood and youth in the workshop, even soldered pipe would be strong enough to operate the rack and pinion.
For example - The steel barrel on shotgun isn't welded or directly screwed to steel magazine pipe below, it it attached with a screw, while the connecting element is hard soldered to it on approx less than 1/2 square inch area.
If it can withstand tens or hundreds thousands of shots with instant rapid and stressful forces, than how can anyone think that a welded steering wheel steel pipe could snap from some silly vibrations or turning done by driver's hands?
Try firing that 12/70 magnum and compare the force you'll feel with steering force feedback of any kind. It's simply ridiculous to say that it snapped from vibrations and that Senna wasn't feeling vibrations all the laps driven with it. If he had he'd report vibrations, or even give up from race, parked the car in the garage. He was courageous but not stupid to risk his life in malfunctioning car which his Williams was surely not. It just got airborne due to insufficient design time caused by "you know who's" change of rules for 1994.