Does the abundant appearance of pubic hair (even if soft), and excessive height and weight, without the appearance of underarm hair or nocturnal emission, constitute legal puberty for someone who has reached 14 years of age?

The signs of puberty are what establish it. Among these is the growth of coarse hair around the pubic area, which requires shaving with a razor. As for fine, soft hair, it is not considered a sign of puberty. Likewise, the growth of armpit hair is not among the signs of puberty. If the hair is soft, it is not considered a sign of puberty.