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

How do you see these below?

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

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

Mark Hughes: Mercedes can disrupt McLaren-Verstappen fight - The Race

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

Visual-kei

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

Can I fix a fridge leak myself, or should I call a pro?

Moreover, buff guys are often avoided for their narcissism.

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

Yaoi

Why do I feel like I want to suck a big dick after injecting meth?

“None of my business” is the common attitude.

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.

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

Were the 1980s as uptight and prudish as movies and TV shows make them out to be? When I think of 80s culture, I think about a very "icky" judgmental yuppie status quo time period.

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

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.

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.

Why is my older sister so mean to me as if I was her enemy?

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).