If a goatee is not thick, does that mean the soft texture of whiskers indicates that you have a soft goatee?

Not necessarily. The thickness of a goatee is determined by the density of hair growth in that area, rather than the softness of the individual hairs. So, even if a goatee is not thick, it can still have a soft texture if the hairs are fine and not coarse. The softness of the whiskers does not necessarily indicate the thickness of the goatee.

Not necessarily. The thickness and texture of a goatee are not directly correlated.