I've done that same test. Very interesting stuff, but some glaring errors in it as well. To be fair, 23andme had many of the same errors in my case.
I don't have the longevity issue; in fact mine was slightly longer than average. That seems to fit with my relatives who made it to their late 90s. But there were also some ludicrous comments (IMHO) that really made me laugh because they were so far off. Of course, there were also others that seemed to be spot on, but how do you decide which to believe?
Bottom line, this is an infant science and we shouldn't take any of it too seriously.