Light Novel trends in recent years

So I don't really read LNs much or keep up with them beyond what's being adapted into animes.

But it seems to me that a lot of recent anime adaptations of (popular) LNs are about anime/manga/eroge culture OR about little sisters OR (pseudo)-incest or all of the above.

Plus a lot of them have sentences for titles. Examples:

Boku wa Tomodachi ga Sukunai
Ore no Imōto ga Konna ni Kawaii Wake ga Nai
Papa no Iukoto wo Kikinasai!
Boku no Imouto wa Kanji ga Yomeru
Kono Naka ni Hitori, Imouto ga Iru!
Omae o Otaku ni Shiteyaru kara, Ore o Riajuu ni Shitekure!
Mahouka Koukou no Rettousei
Kore wa Zombie Desu ka?
Dakara Boku wa, H ga Dekinai
Oniichan dakedo Ai Sae Areba Kankeinai yo ne
Saikin, Imouto no Yousu ga Chotto Okashii n da ga
Ore no Kanojo to Osananajimi ga Shuraba Sugiru
Watashi ga Motenai no wa Dou Kangaetemo Omaera ga Warui!
Sekai Ichi no Imouto-sama

Are long titles and (pseudo)-incest the new trend?

EDIT: There seems to be more incest stories with long titles.