On one hand, tackle, I get your point. A player that knows the game can fight evenly with gold users. Yes, it is a war game and as such it doesn't have to be fair. "All is fair in love and war."
On the other hand though - you have to realize that spending more than 50-100$/month is literally like having 3-4 subscription accounts. It's also more than the cost of a AAA title. And I do agree with you to a certain extent but I also can't help but disagree. Because as much as "all is fair in war" so should war be about tactics, strategy and strength, not about the size of your wallet.
But hey, to me it doesn't matter how much money anyone spends on this game. I'm here to have fun and as long as I find Grepolis enjoyable I will come back no matter what benefits gold users get.
~T.