Yes, I may be making some assumptions but I also speak with a little bit of knowledge on the subject. I'd like to think if I was faced with a similar situation I'd know how to handle it. I am a pilot myself and I don't like casting aspersions on fellow pilots but evidence so far shows other pilots have dealt with this problem successfully by following the correct procedures.
One question that has to be asked is why did these two crews not manage to do so? That shows there is a deficiency somewhere. That can mean a deficiency in training which is not a direct reflection on the individual pilots. So was it lack of training or something else?
Boeing did not tell anyone about MCAS prior to the Lion Air crash - I don't know how you can blame the pilots there, the first pilot must have in his personal time discovered the hack to disable trim control without being formally trained for it.
After that Boeing implemented training on how to disable MCAS but the training must have not yet disseminated throughout the world OR, there was something else Boeing is not telling us about.