A lot of force free trainers love to attack videos posted by balanced trainers by saying things like, "the dog looks stress", "the behaviours are just being suppressed", etc.
I like to discuss this, based on my own first hand experience both as a force free trainer (first 5 years of my career) and a balanced trainer, because I think this misconception can cause a lot of owners of challenging dogs to end up missing the chance to get the help they desperately need.