Because grown up Dipper is the awesome Dipper... did I mention I was their age when the show started... meaning years wise he'd probably be sixteen by now (Despite the fact that the show ended a few months ago and they were '13'...)
ŌkamiandFenrix: Todo recuerdo que puedas conservar es un tesoro, yo no hago estos dibujos, arte si me preguntan pero quisiera ponerlos porque tienen un gran significado para nosotros los que quisiéramos haber nacido en Gravity Falls. ---------------- ŌkamiandFenrix: All memory that you can preserve is a treasure, I do not do these drawings, art if you ask me but I would like them because they have a great significance for us as we wanted to be born in Gravity Falls.
gravity falls dipper and mabel episode: love god (fun fact: since the creator was for some reason not allowed to add a 'queer' character to the cartoon, he gave mabel a rainbow swearer to represent gay rights :3)
for that suggestion of Dipper being a fanboy and also dressing up as the author bc he’d think that is SO cool haha