>Vanguard Target Funds have *way* less than your age in bonds

Cause "your age in bonds" is a way to simplify it for people doing it themselves.

Target funds will not increase their bond allocation so linearly. You're young, you don't want your funds tied up in bonds. Hell, many people recommend identifying the correct target date fund for your retirement, and then adding another 10 years to it to keep it from overallocating bonds too quickly.