Your message is much too long, and I'm going to stop at the fourth line because you're already getting off track.
Bad endings can be avoided, and I made that clear. For a bad ending to occur, there are three choices that must be made for the player to be aware that they are “either sabotaging their own relationship, repeatedly ignoring a character, or repeatedly not caring.”
After three times, the bad ending is confirmed, and all that's left is to discover the outcome. Now I'm going to delete your post because it's all speculation, misinterpretation, fake news, and so on.