Can't disagree with that, given the limitations imposed by the multiplayer aspect the actual space flight is done about as well as it could have been and is the best part of the game.
I don't grind in ED. Been playing since beta and own 4 ships. A rated Sidewinder, A rated FDL, A rated Python, mostly A rated Corvette. That's it. I have a few level 1 mods on my weapons and power sub systems and about 70 million credits (I think, I can't remember I haven't played for a few months). Hardly the assets of a "grinder". The game is a lot of fun, especially early on, but to argue that it's not repetitive is to argue that up is down. Yes, there are many different "activities", but they all revolve around performing the same actions within the same context for the same rewards.
....and given the nature of the game, how is it different from any other video game? What is Doom or Gears of War except a massive, largely on rails "shoot em up" as is almost every FPS. Yet few games give me the freedom to do what I want, largely at my own pace.