It's not about listening to or ignoring anyone. Frontier knows exactly what they are doing here. You can tell by the way that they just HAPPENED to need mining before this all was announced.
The FCs are not content for the players. It's a guaranteed grind for FDev which allows them to artificially retain players and keep them busy until the next major update. It's their way of forcing players to stay. They put it JUST within reach of 25% of players so they can swindle them out of their game time to pump up their own numbers. It was never about content for the players. It was always about them putting a new grind into the game to keep people grinding.
FDev doesn't care that the FCs are out of reach of the vast majority of the playerbase. The fact they refuse to address how upset players are with the state of things is proof of that.
I think the supply and demand change was more likely put in place to curtail bulk selling gold rushes when fleet carriers arrive with their cargo storage option