Actually, I see no rule that would not allow Arturo to post.
There is nothing in the TOS about needing ability to grasp the english language or the written word.
The only reason that Arturo would be a TOS violation is if he is an "alias" of another Flyertalker, as two or more accounts is strictly a violation.
However, Punki has made it quite clear that everyone of substance amongst Flyertalk's old timers has or is about to leave Flyertalk because of recent changes that annoy her
and a vast majority of past Flyertaklers . So, logic dictates that that Arturo's other persona has left Flyertalk, finally making him legit.
But, that's just logic based upon what people have said, so don't hold me to it, as who knows who can be trusted anymore.