Since chapter 1, when our MC both before and after reincarnation referred to the game's protagonist as a lolicon.
It's best to think that because his own age preference is skewed so much older, that it also moves that "by definition" aspect as well.
Yeah, MC called the protag a Lolicon, but that's because of his own skewed views though.
That shouldn't affect the readers and make them redefine or change the meaning of a word.
I really become irritated by this stuff, like how nowadays, people call any Woman (without a child) in her mid-20's or older as MILF, when that term has a very specific meaning.
On a side note relating to the series, the irony in what MC says and does is that while MC is against Lolicon's.
By his own definition, he is turning all the Mama's he is meeting into Shotacon's.
I mean, he was around 15 when he lost his V-card to Mama Maniana, and later he also did it with others as well after that.
Aka., MC himself hates minor girls, but doesn't have issue with making older women fall for a minor.