It’s ephebophilia, not pedophilia. Ephebophilia is attraction to fully developed young women, pedophilia is attraction to undeveloped prepubescent girls. No one would argue that the latter is anything other than inappropriate, whereas attraction to developed teenagers is completely natural and biologically just makes sense.
The issue is with judgment. In a society that devalues having children, young women are generally less prepared for raising children at a younger age—this is a very recent sociological phenomenon. Some 16 year olds are capable of making good decisions as parents and often with the benefit of guidance from extended family, as has historically been the case. Other 16 year olds, or 36 year olds for that matter, simply should never have children to begin with, and when they do, it’s the children that suffer the most.
tldr; stop fixating on age and pay attention to actual physiological and sociological maturity.