I tried searching online. Looks like documentary video is just a small part of a major movement. You could search "The Nest Collective- Return to Sender". Most of the websites I found only have info blogs but sadly I couldn't find the video.
That is an argument one of the speakers in the video mentioned. Mitumba and fast fashion has killed more jibs and dissolved more industries in Kenya and neighbouring countries, contrary to the pretense of creating them.
Rest in peace, Grandma.
I can see the irony in the plastic flowers.
It is very sad at the same time.