they do!! i'm 28 and i havent lived w my parents in a long time but yeah they've known for a while. they're both very impressed with my book binding and my mom loves to brag about it to her friends LMAO. neither of them understand why i dont try to make money off writing, which i think is a very gen x way of viewing a hobby. when brighter days trended on twitter i told my dad about it and he was like 'you do that for free???" and i told my mom i raised like 300$ for a charity thing w writing and she was like "why dont you publish for money" like omg diva bc that sucks the fun out of it!!! but yeah they know. i'm open with everyone about it irl besides like, my coworkers. they don't need to know about that. i've told like one of my coworkers that i write fic but not what kind of fic and that was because i know she's a similarly fandom minded person LMAO. but i'm very much not ashamed of my fic, i'm proud of it! and i'm proud of all the words i've published!! so yeah-- long winded answer to say yes everyone knows and they're all chill w it! my parents are both liberal and open minded, which def probably helps. i'm not sure what your situation is!