Earlier quoted context omitted.
This is a No True Scotsman argument. The guy enumerated a list of ways scrum failed in his experience; it's always interesting to hear honestly about failure modes from people who have actually used something a lot in their work.
It's interesting to hear about failure modes, and anyone whose job it is to teach stuff like this is interested in hearing about failure modes. It's the taking of one person's experience and extending it to encompass everything that's wrong. Obviously the people charged with implementing this in OP's company are doing it wrong. That doesn't mean it's OK to insinuate that everyone who ever tries to implement Scrum or…
Anecdata Of One: I have worked at many places since 2005 and the most successful projects have been those without any Agile[1]/Scrum imposed by management. In contrast, the places with the worst outcomes[2] have all had distinct Agile/Scrum imposed by micro-managers[3].
[1] Plenty of places with iterative development but solely due to the nature of the work (changes required by external QA, experiments, etc.), not imposed.
[2] Software quality and speed of development-wise. They're all still alive and limping along despite the horrific nature of their internal systems.
[3] Who have always been there in a place with Agile/Scrum. Only once in a place without. I don't think it's coincidental.