At first, I thought you had a good point. But apparently, the study is already exploring this effect. So, now, the situation is that you have seen a study with

At first, I thought you had a good point. But apparently, the study is already exploring this effect. So, now, the situation is that you have seen a study with results that you don't like, have come up with a reason why the conclusion is invalid without even checking if the conclusion is indeed invalidated by this reason, and used it to reassure yourself and attack the study. In this case, you are clearly the unscientific irresponsible here.