Really no surprise.
I find this :
in particular to be very strange. My ex (who no doubt has some type of personality disorder - narcissistic, borderline, SOMETHING), was adamant about almost everything about when our ds was born. His name took us MONTHS of fighting to decide on, his last name took tons of fighting, his middle name was a huge battle, (and not b/c we couldn't find anything we liked, b/c he had to have the last word) everything was such a fight. Circ? He didn't care one bit. I insisted ds be left intact, and my ex made a half hearted attempt to argue, but didn't push it at all. Completely anecdotal I know, but I think its strange.
I witnessed my brother-in-law scolding his mother about her circumcising him. That it wasn't hers to decide but should have been his. Years later he marries and cuts his son. Strange. (The lesson here is even though I though it wasn't needed to give circumcision info, I should have given it JUST THE SAME.)
There were only 300 total participants in the survey. That's not a large enough sample to allow any conclusions to be made. Other articles I read said that alexithymia occurs in 4-8% of the general population. So, that means 12-24 of the people in the survey likely have some degree of alexithymia. Then you have to take those 12-24 people and account for all other compounding factors (family history of mental illness, parenting styles, traumatic childhood events, prenatal conditions, etc.). What you'll be left with is an extremely small sample size of people with alexithymia that can not be directly attributed to another cause besides circumcision. Thus this article, while its intent is honorable, is completely unreputable and should be regarded as such. A much larger sample size and more controlled sampling procedures would need to be in place before any conclusions are reached.
Circumcised men scored higher on this test. Does circumcision cause emotional issues?
Children who are potty trained tend to be speaking on complex sentences. Does potty training lead to complex language?
As the statisticians always say: Correlation is not causation.
In the case of potty training and complex sentences -- it has to do with overall age and motor development. I strongly suspect there are similar underlying factors for circumcision.
I'd be willing to bet that they can't replicate these findings with Finnish men or another culture where not talking about your feelings is common.