most Gen Z men are lack the social and communication skills to even enter a relationship

Interesting choice of words. I'd say it borders misandry.

I don't think that decrease in social skills of the younger generation influenced solely boys.

That being said it's definitely a greater issue for them, since they are expected to initiate and organize almost everything in the initial phase of relationship. Maybe that's what you meant.

What I've seen (in admittably limited experience) is a decrease of skills all over the board combined with lack of patience and will to improve together.