I believe this is a false claim. I have the slight advantage of playing primarily as the Germans since June or so and here are two screen shots from two different Multiplayer games I have going on showing that this is not the case.
I have my own strategies and tactics but I won't disclose them, I leave that to the players to discover on their own. Likewise there are those that state such and such is broken, bugged or what not, but in reality they just need to learn how to adapt and overcome with the tools that Alvaro has provided us with.
Both players are good players (and one I know is a play tester on a beta project with me and he has taught me a lot about that game and gaming in general), this in no way is a discredit to them but just to point out that you need to learn how to use the game to get the results you desire. I am not an expert in fact John the Greek frustrates me to no end in this game.
So my bottom line is that no this does not boil down to some WW1 type of action at all.
Here are a couple of screenshots showing what I mean, the first two just happen to be on the same turn/date stamp and the last one shows the next turn in one of the games.
So in my opinion if your running into trench warfare then your not doing something right, your not using the tools you have at your disposal correctly to attain the desired results. In my opinion.
Sorry that the images are so large, I have a 4k monitor.
Game 1.

Game 2.

One them's games next turns moves at end of turn 7/15/40.









