Ming from Agents of Speech explains why ABA therapists in Malaysia, Indonesia, and Hong Kong have wildly different skill levels. Southeast Asia lacks required education and regulatory bodies, so underqualified people can practice, though most are driven by a desire to help rather than profit.
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I've been to countries that are a little bit behind in therapy, for instance, Malaysia, Indonesia. From what I see, at the very least, ABA therapists can range from excellent and very good at talking to children, teaching them, to all the way over here that aren't especially know what they're doing. And that's to do with the training involved. So ABA isn't a very regulated industry. And let's say at the very least Southeast Asia or even in where I'm from, Hong Kong, there's no regulatory body. You don't need to have a certain education in order to become an ABA therapist, which makes way for people who want to make a living off it very easily. And whereas there are majority of the people who go inside the industry are great people because to be honest, hey, you don't make a lot of money over ABA or speech therapy or whatever. They're there to learn and help.