Your description fits Bangladesh, except for the location. If you’ve seen news reports about major disasters in exploitative clothing factories, then those were probably about factories in Bangladesh.
Myanmar is majority Buddhist. No outsiders, except international criminals (scammers, drugs) set up any factories in Myanmar, because of the civil war and political instability.
You can find several of those companies in the list of acquisitions by ebay: https://en.m.wikipedia.org/wiki/List_of_acquisitions_by_eBay
It seems like mba’s are in control at ebay: first they enshittified their own product because they didn’t understand how it was used, and instead of fixing their own enshittified product, they instead started buying their competition and then commenced enshittifying those.