Where are you getting this from? As far as I can see Frontier have said no such thing.
In fact the only "evidence" we currently have seems to indicate that an attempted exploit (whether intentional or not) was required as the first step to gaining the 5 billion.
Uhm... No. Go back to post:
https://forums.frontier.co.uk/showthread.php?t=92233&p=1437939&viewfull=1#post1437939
Specifically from Andrew:
After shoring up the database, in the early hours of the 2nd of January, we automatically refunded all the affected players for their lost transactions and also granted them a 20% bonus for their troubles. However, during this refund process, a very few (lucky) commanders received more credits than perhaps they were entitled to (5 billion credits in some cases)!
And
We are also aware of an exploit (I wont detail it here) which occurred due to this database error, where players have been abusing the broken state of their ship to "create credits". These players know they are exploiting the system and will also be investigated. Actions may be taken against players who are known to be exploiting the system and do stand out from the commanders who were simply given the credits during our credit refund process.
So what happened seemed to be:
1. some players were suffering a bug (something with stuck cargo I heard)
2. FD fixed the bug
3. FD refunded the affected players with the costs of the bug, plus x%, to compensate for lost time and frustration.
4. For some reason, FD 'd step 3 for n players (according to some sources fewer than 50 people) and awarded them not x%, but 5 billion Cr.
5. FD gave the people affected by step 4 the infamous 3 options.
At no point are the people affected
exploiters, at least not in any way I would define an exploiter. They did not willfully manipulate events, mechanics and bugs in unintended ways for whatever gain. They were victims of a bug and FD made a mess of the compensation measure. That's all.
In the second quoted paragraph, Andrew then makes an extra statement about exploiters who wilfully used to bug for their own gains. He states that their cases are clearly different from the others and that they will be investigated. They did not
exploit the bug to get the 5 billion Cr. So let's not paint the 5 billion Cr. club as a bunch of exploiters, or even worse, cheaters.
This being said, a single player with that much money is able to change a small part of the universe significantly. It's very unlikely to affect any specific player, but any player that happens to be in the near vicinity of a 5 billion Cr club player will likely be affected in ways that may or may not be significant, depending on play style. It may have impact on faction influence, mission availability, commodity prices. Or even the mere presence of a top-outfitted ship. It's definately not certain what a 5 billion Cr club player will do, it will almost certainly not impact myself given there are at most 50 members of that club. If one happens to live near me though, I might have to move away if I find his/her influence on the game state affecting my play style.
Therefore, I do believe a rollback of those 5 billion would have been most wise. Because they were double victims (original bug + compensation , both responsibility of FD themselves), I'd offer a generous compensation: maybe a free paintjob, double credits, that sort of thing: something to compensate for lost time, inconvenience, that would be fair to the victims as well as not unsettling the rest of the player community.
I don't think there is actual malice involved, but I do think that FD have severely miscalculated the impact of their decision to go online.