Maeve should not have been able to stab Homelander in the ear
So some of the arguments people use are that the ears and eyes are a supe's weak point, and they as vulnerable as regular humans ears and eyes are, or that because the metal straw was used by Maeve, it manage to penetrate Homelander's skin.
In Diabolical, in a canon episode, Homelander tanks an explosion, and his ears and eyes are completly fine, if they had the same durability as a regular human, they would have been completely destroyed.
Maeve's strength and speed also doesn't provide an explanation. Maeve wasn't even moving that fast, and she doesn't have superspeed. Also, Maeve's fists were probably more dense then the metal straw, and she only gave Homelander a slight nosebleed with them.
So the metal straw should have just broken on impact.
I feel the same way about Becca being able to stab Stormfront in the eye, that makes even less sense.