I'm still unsure why Rare didn't temporarily disable "THAT" voyage but we can all be sure that they wouldn't want us to exploit it. Many people have tried it for sure and I think that's fine but you shouldn't abuse it, too much of it can ruin the game for you and others in different ways.
It probably will not be bannable, if it were Rare would have already clarified it on social media to protect players, effectively preventing them from getting banned by exploiting the system as people will not do it if they know they'll get banned and at the same time prevent them from using the exploit for the same reason. The reason why they are not clarifying the situation is much probably because they don't want to ban people for this, clarifying it now would tempt much more people to exploit and that is not what Rare wants. By not speaking openly they are trying to make people worried about a possible ban to prevent them from exploiting.
This said you still shouldn't abuse the exploit too much. If you used it already a couple sessions you are much probably gonna be fine but stop there :)
