Discussion: How much should new dads actually be involved in diaper brand/formula choices?

Had a weird moment last night where I suggested we try a different diaper brand because the current ones give my son (2 months) a rash but my wife took it as criticism of her choices? That wasn't the intent at all - I was just problem-solving because he's uncomfortable.

Now I'm wondering if I'm overstepping by having opinions on this stuff. Obviously her body is still recovering and she's doing most of the care work, but like... it's also my kid and his comfort matters to me? What's the right dynamic here? How do you guys navigate who makes what decisions?