As teachers, contextualizing the language with our class is strongly advised. Its importance stems from how much easier it is for a student to learn contents when those are explained in the most suitable context.
Collective activities meant to fulfill the group's needs, equally developing macro-skills, motivation and appealing topics are just some of the advantages and intentions of contextualized language.
The was something on the video that caught my attention. Most students seemed eager to participate, rather than show any shyness at all, which would be the most common case in our environment. So it is not far-fetched to say that class was interested in the topic and did not fully relied on the teacher to push them or ask them, they had undeniable initiative.
Contextualized language could presumably work in our reality, although not to the same degree. The success level would depend on several factors, such as the students' background, age, personality, etc. However, the consistent practice of contextualized language could very much lead to a satisfying learning process, as long as patience and effort are part of the teacher's vision.
I believe more than just a few learners may not necessarily have a positive attitude when facing the contextualized language approach.
Another point regarding contextualized language to take into consideration is the fact that many teachers are not quite prepared to make proper use of the approach.
It is a shame that currently there are not many places where teachers can be truly trained for developing contextualized language. In order to counteract, teachers do not have much of a choice but to become self-taught in the area.