There is a temptation in games that start 1e4 e5 and with white bringing a bishop to c4 to prevent white playing Ng5 to attack the f7 square by playing h6. This is usually wrong. It is preferable to get the king’s side pieces out and castle. If white wants to waste time swapping his developed bishop and knight for rook and pawn, that should be fine by black.
Here is a drastic example of what can go wrong played recently by myself. After move 8 black has a lost position and even after the better 8 …. c5 white is doing well with 9 Nd7 Ke7; 10 Qc5 Kd7; 11 Qb5 when black has his king in the middle in advance of his whole army. 5 …. Qe7 would have made the best of a bad job.