That's for the feedback, bud!
I fully understand what you mean, and honestly that's what I was gonna do from the start. Have a list of all the endings completed, make the hidden flavor text just that, make the door an actual keypad that the player would type the code into, etc., etc. Unfortunately, Harlowe kinda sucks, and the deeper I looked into the backflips just to get a save system going to facilitate a system like that was way more than than what it was worth. So I ended up settling on the current design (as annoying as it is.)
...and why on the next update, there will be a way to just bypass the door. It was always planned, but I guess it doesn't hurt saying.