Oh no, in my opinion is all the way around. These are Mexican informal business [called this way as they do business without declaring income, hence no tax payment], which aren't registered publicly as business, which means they may not be identified by Mexico tax system or customer protection public services.
In our Mexican culture, customer service from these small business is not very often a good one. So when a customer experience some incidence, it is often we don't do much more than to accept what it is. What I'm trying to say, is us Mexicans dealing with some of these small business, we don't really push or take it further very much when some incidence happens. As it may be opposed to first world countries.
Appreciate it is some business culture we ourselves as consumers promote, but I have heard rumors that even Cleto Reyes factory, its gear that has small quality issues is left to be sold in Mexico, so the 100% quality gear can go to foreign countries.
Similar happen with some of these workshops, they are used to work easier or having less complains from their Mexican customers, which doesn't mean they provide better quality. We may just be more used to dealing with these kind of services.