Claim what? If you go through the results and exclude the individuals who didn’t show the outcome you wanted to see, that’s called cherry-picking. It’s a well-known phrase.
There is a concept of subgroup analysis in studies like these, but you have to be careful about how it’s done and what conclusions are drawn. If you simply select positive results and exclude negative results then even the placebo group would show great success.
This study showed that telling people that they were microdosing was more important for the perceived outcome than the micro dosing itself. In other words, placebo is key to making it work.