I hear you on that, @CurlsandCurves - my now-ex is definitely not stupid. Gullible, vulnerable to flattery and brainwashed into irrational thinking, perhaps...
If the aim is to convince people that they should leave an MLM, it certainly isn't helpful to call them 'stupid', as all it will do is reinforce the siege mentality of 'me and my teamies against a hostile jealous world that doesn't want us to succeed' and they will double down (although, as we have discussed at some length in these threads, there is actually no approach that works to convince a full metal botted hun that they are wasting time, energy, relationships and money in pursuit of a mirage, except waiting for the penny to drop).
That being said, the video was aimed at warning Australians about what was coming their way, and giving them as much information as they needed to avoid it like the plague. In that context, and being forewarned , it would indeed be stupid to then go and join TS Life.
My feeling is that, while her approach may not be helpful in dealing with practicing huns, if it dissuades others from joining, then it is useful...