It should be said that he went on to tweet that opposition to the trial would have had more of an effect than the newsletter. In doing so he brings into question the whole notion of subjective measures. It seems obvious to me that the biggest effect on subjective measures is the treatments that say 'change how you think about your symptoms and you will get better'. Followed by the question 'how do you feel about your symptoms'!
It's classic deflection. Faced with someone highlighting an issue, rather than address it you attempt to change the focus. He is good at this, but this is not rocket science, it is basic stuff when you think about it, and you can learn to do this by following less than a dozen rules about what to do when faced with certain scenarios. He is very predictable. Just important to see it for what it is and not let people using these slippery tactics to dictate the narrative.
The really great thing, in my view, is that seeing these tactics being employed tells us a lot about the person's mindset and what makes them uncomfortable. Simon and his group are not comfortable with the focus being on the flaws in their research. Nice of them to indicate where we should focus our efforts.
As seen here, attempting to deflect attention away from such areas also leads to mistakes, and we may be able to highlight those too.
Whatever people do, if they wish to engage with people like Sir Simon on Twitter, or even remark about them on here, it is important not to get emotional and keep to the facts in a polite way.
I don't think there is anything wrong with engaging with him and others on social media in principle. Personally, I rarely engage with Sir Simon on Twitter because I dont think there is much to be gained from it and unless there is a purpose to it, what's the point? If we do engage with people like this then we must always be polite - professional even, despite the fact people like this may have let patients down badly over the years.