Yes, too bad. Because that renders the entire event an odd, not fully-understood occurance.
However odd, it does nothing to prove that there is a god.
Please understand that my participation in any discussion on this forum is unrelated to my role as a member of staff. When I need to put on my staff hat, it will be obvious, and I will do my best to keep it separate from my opinion hat.
The event at Fatima, and similar events, are fine for discussion. I do not see any reason they should not be welcome. But merely saying that the Fatima "vision" could be evidence of god is not the same as it being proof of god.
And, frankly, I'd automatically suspect anything that so carefully matches the overbearingly popular doctrine in such a highly-religious culture to be the direct result of predisposition. In other words, people saw a Catholic vision because it was a highly Catholic country... just like people see little green men with big eyes coming out of a brightly-lit spheroid when they are predisposed to believe that's what aliens look like.
Now, show me something utterly alien and I'll believe it might be alien.
Also, please understand, I think that statistically speaking it is certain that not only are there other sentient cultures in the universe; in fact there are bound to be many many so, no matter how rare. They could possibly have even visited this planet. But I wouldn't guarantee it based on the evidence.