might have been but it's quite concise and I loves it. But it totally leaves out the cute em up sub genre
Most likely because its just a stylistic subgenre and not one that changes gameplay aspects like the other mentioned genres do (classic / danmaku shooters). The most interesting thing about this documentary was definitely the footage from SWY and Ikeda.
Does anyone know if that gba danmaku shooter created by Masakatsu Tomii was ever released to the public? It briefly shows him playing it on a pc in the vid.