How conservative the Japanese people really is? And the government?

This is a very vague question. But considering the asker’s comment on Mr. Nakajima’s answer, your interest seems to be in sex-related matters (I don’t think it’s the only indicator of conservative/ progressive, though).

I sometimes feel people from the West are obsessed with those “gender” and “sex” things too much. Let’s think about something else sometimes. It’s unhealthy.

Yaoi

What kind of person makes you think "how come there are people like that"?

Moreover, buff guys are often avoided for their narcissism.

I’ve heard it’s always the male side that is expected to take a move in some countries. It’s not the case in Japan.

In the old era, gay relationships were very common and were even praised among the privileged social classes, such as Samurai and monks.

How do you write a letter to your uncle who sent you money for your birthday outfit?

Visual-kei

We don’t instantly tie it with sex when a father and his very young daughter are taking a bath together.

It’s very common for a girl/ woman to ask a boy/ man to be her boyfriend.

Molly Jong-Fast on Human Frailty and Unlearning Erica Jong’s Lessons - Literary Hub

They don’t bring around their mates everywhere, which means they don’t worry about being single, gay, or whatever because no one cares about whom others are having/ not having sex with.

They don’t tease or beat up cross-dressed people on the road.

How do you see these below?

Have you ever heard of the god Priapus being the same as the god Phosphorus?

They were very similar to the bromance of today but accompanied by sexual intercourse.

“None of my business” is the common attitude.

They don’t have the value that “guys must be macho.”

Where did Noah build the Ark? Was it in a desert or near water?

They don’t have the so-called “couple culture” seen in many Western countries.