No what's stupid is assuming that fanon trends are the default, there are tonnes of people who don't read in tiny fandoms outside of yuletide and may have no idea what the majority of gic focuses on and others who are requesting the fandom because they want canon not the ubiquitous fandom focus because they don't like that. Start with trusting that your recipient wants the canon they're requesting and if they haven't DNW tropes or possible triggery parts of the canon and haven't said they want fanon then give what they asked for, not what the rest of fandom wants.
Re: Why isn't Yuletide growing?