Indeed - I was also surprised by this. One possibility, which I hope is true, is that the authors are funded for something else (some actual research). If they spent a few hours of their workday to throw this together, they might be obligated to cite their funding agency.
I know for a fact that I've acknowledged funding agencies on papers about topics that were at best extremely tangential to my grant.
A less flattering possibility is that they wanna use EU affiliation as a badge for respect for privacy or something like that.
