Well, my concern stems from the following:

1, Principle, it should be up to me to decide who gets to see what I am up to. If the information is irrelevant to anyone, why do they need the option to see it? It should not be technically difficult to limit what information is publicly displayed on that webpage.

2, logs of my ingame activities give a pretty good idea of what I was doing when I was doing it. Which while yes, the probability of this being put to any nefarious use is slim, nonetheless, it really is none of anyone else's business.

3, I assume a lot of people here played MMORPGs in the past, and probably a lot played XI too. And most likely everyone knows someone who had their account hacked into. While most of these hackings were probably "hackings" where relevant info was voluntarily shared, or social engineering in general, and I do have a token, I have no interest in making myself a target. What happens the day they introduce more achievements dealing with loot/gil etc? (if they do of course)