I'm going to play Devils Advocate here, but please bear in mind I didn't really care about other peoples gold rushes up until the mining missions got pulled.
Previous methods bent game mechanics.
Skimmers could be done without re-logging, and just by playing the game.
This method requires playing the game.
Yeah, so did skimmers.
It promotes COOP gameplay
Er, no, absolutely not. In the video I watched, the missions were completely alone, and the wing only exists for the few seconds it takes for the final hand in.
You need a Cutter or T9 to do this.
If you use a Python, it will cut your rate by about half, but after two hours, you'll be able to buy a T9 anyway. I'm pretty sure you could start with a Type 6 and upgrade to a Type 9 in about 4 hours.
This one counts as requiring skill and coordination
What skill? being able to fly from A to B and look-up markets on eddb?, and the only coordination necessary occurs in Discord, not in game.
Honestly guys, if you'd said something about these gold rushes being FDev's problem and all fair game, that would have at least been honest. Those rationalizations above are exactly that - rationalizations, not at all devoid of the brown and smelly stuff.