That is a statistical lie.

His music preferences are described with 2076 characters, while ties uses 1838.

You could state that ties is the singular item under a bullet point list with most text. However then we are either saying that music isn't "a singular item", or that in a compositional sense, RMS hasn't spaced the tie text with bullet points where for music he do.

I thought his opinion on ties (or really on the social pressure of ties) was one of the more interesting sections.

BTW, he uses more text to describe his taste in music.

I think the principle he talked about using the "ties" allegory was the most interesting part:

"The people who wear ties under these circumstances are victim-coperpetrators: each one who cedes to this pressure and wears a tie increases the pressure on others. This is a central concept for understanding other forms of propagating nastiness, including nonfree software and Facebook. In fact, it was in regard to ties that I first recognized this phenomenon.

I don't condemn victim-coperpetrators, since they are primarily victims and only secondarily perpetrators. But I believe I should not be one of them. I hope my refusal to wear a tie will make it easier for others to refuse as well."

I don't really see wearing or not wearing ties as some kind of moral imperative.