No, it's not an issue of other people making more credits compared to me. It's an issue of game balance for the majority.
If one sector is making credits too easily, others complain about the need to inflate their income: mining, exploration and trading being the big three. The game becomes unbalanced because the one easy-money feature creates a credit inflation problem for everybody else.
Furthermore, a sudden raft of new players making easy credits to advance through the game quickly to purchase bigger ships without the accompanying piloting skills will make for easy target practice, because they won't have learned sufficient tactics to handle those ships well. So that's not a problem for me.
It does, however, become a problem for me later when they start whining the game is too hard, the AI are too difficult, and other pilots are causing them grief.
Then the whole game suffers because it has to be rebalanced once again to satisfy their woes.
Let me paraphrase to make sure I understand you: if one way of earning credits significantly outpaces another, it's a problem because people will complain. Furthermore, if new players earn too many credits, then they will fly expensive ships without knowing how to stay alive, and this is a problem because they will complain when they get creamed. And ultimately, these complaints are a problem for YOU because FDev will listen to their complaints and act on them in a way that diminishes the game. Do I have it right?
If so, I really struggle with this line of reasoning. Your worries seems to be blown way out of proportion. What I mean is that you're giving too much weight to a potential outcome that may or may not even happen (an undesirable balance pass). At the same time, you don't give enough weight to the real and immediate problem of this game being inaccessible and frustrating to new players and casual players. This is important to me because those players are the ones who leave bad reviews on Steam, which ultimately gives FDev fewer resources to work with.
I invite you to read these negative reviews:
http://store.steampowered.com/app/359320/#app_reviews_hash
At no point will you read a review that says, "I made rapid progress in this game, and I was able to buy and outfit the ship I wanted... but I still got killed sometimes. 0/5 stars." What you will read is a lot of, "Making progress in this game is slow, so I decided to play something else instead."
So from my standpoint, your worries about a potential bad outcome in the future are dwarfed by the problems that new players experience today. And this is a problem because it diminishes the number of active players in our community. Do you understand?