I saw this days ago. The problem is validating strength and integrity over time. That sort of long-term follow-up and scientific, repeatable destructive testing doesn't fit into a short video. Evangelizing unproven construction methods and materials is reckless without context and nuance.

When an office building was built in any earthquake-prone area that housed a nuclear engineering consultancy I worked in for several years, multiple test specimens of concrete were poured and kept for later testing and evaluation, and extra ones were kept should there ever be a question about the concrete's quality in the future.