Toffoli is streaky as hell, he often hoes on a 4-5 name scoreless drought
Tyler Toffoli
Tatar is the definition of streaky, he even went 10 game without a goal in March
Tomas Tatar
Anderson, multiple 5-7 scoreless games
Tomas Tatar
Gallagher's goals are "garbage goals" it's his bread and butter. He doesn't score often off a rush or a direct pass. He battles for the puck in front of the net and shoves it in.
What team have you been watching?
Yes, a center isn't necessarily a goal scorer, he is the playmaker. He's supposed to be a good passer, fast skater and good defensively so he can back check and rush back to defend. If he has a scoring touch, that's all the better.
I'm starting to think you don't quite understand the game.