> They simply eliminated the matte option without comment, and finally brought it back many years later.

Wasn’t the matte option that disappeared just then removing the glass in front of the screen? I seem to remember that (my MBP from that time was glossy).

The nano textured coating they are using now is quite complex and I am not quite sure it was applicable at such scales cheaply enough back in 2015.

The PowerBook and the first MacBook Pro were only matte.

A glossy option was introduced in 2006, but the MacBook Pro was still matte by default.

In 2008, the MacBook Pro case was redesigned, and then the display situation changed significantly.

I don't think this is exactly accurate. The matte was a ~$80 upgrade option after they released the glossy. I definitely preferred the matte screens and still do. For coding reducing glare in uncontrolled environments is way more important to me than color fidelity, but to each their own.