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

“None of my business” is the common attitude.

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

How can someone express their love for a guy without using words? What are some actions that can convey love and care?

Moreover, buff guys are often avoided for their narcissism.

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

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.

Most people obey arbitrary rules even when it's not in their interest to do so, experiments show - Phys.org

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).

How do you see these below?

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.

Alzheimer's: Common insomnia treatment may prevent brain damage - Medical News Today

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 tease or beat up cross-dressed people on the road.

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

Column | We asked an oncologist: Should we worry about endocrine disruptors? - The Washington Post

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

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

Visual-kei

Your TRICARE Checklist for Moving - TRICARE Newsroom (.mil)

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