Correct, this is how all resumes work. Remember, nothing on the resume is verifiable apart from the dates and companies the candidate worked for, unless you do a phone screen or panel interview. So the resume selects the candidates suitable for the skills based interview. I know some people think the candidate needs to write "I am passionate about quality" or "I love collecting butterflies and have all of Nabokov's first editions" but those are primarily creative writing exercises that don't end up telling much that is reliable or reproducible across candidates.
> The number of languages listed is laughably small for a 13 year candidate, but I guess they have picked out the ones they think you want to see.
Correct, and one would understand that for someone with 10 years of experience it's not hard to pick up a new language, nor is language particularly important in this role. Neither is framework.
> I cannot tell even one thing that the person is particularly good at
No, you can't tell that from a resume, but you can tell what a person worked on (perhaps poorly). In this case, there is plenty of QA, webapp, and some security experience. This gives you avenues to drill down during the in person interview.
Remember, the only thing you know is true on a resume is the list of prior work experiences. Then you look for a collection of claimed skills. So when reviewing the resume you check whether the claimed skills match your needs and then drill down to verify the claims during the in person interview. That's pretty much all the info you can ever get.