Calling it an "inaccuracy" is nothing more than the engine saying that it evaluates the position after one move to be a certain amount better than after another move. It doesn't necessarily mean a move is "bad".
Both d-pawns cannot be kept no matter what Black does. After 1...Ne4, if White plays Nxe4, the recapture will leave the c4 ...
Black stands terrible, and h6 like you suggested is the only chance to muddle waters as a rook line against the white king is opened. And in this variant, I would rather let the Bh3 live for now: It's rather a liability with the pin than the rook giving a plain check. Also, White threatens h6 followed by more pawn moves, which would completely ...
Alex (may he RIP) told me: "Nf3 I can choose whether or not to play d4 and when...if at all. With Nf3 I blackmail the opponent. With white I play for solid advantage and black has to play precisely not be worse. With black it is worth it to play more "dynamically" and take a risk.
Josh says f5 ... Is Josh wrong about f5?
Yes, although black's position is terrible in any case.
If we look at the initial position and try and assess a number of things are immediately obvious:
White has a lot more space
All the pieces and all the pawns are still on the board
We can also say:
White has completed development
Black still has several ...