In my local(?) community (like in my city, not my industry) there is a saying "if you had to ask for relationship advice, then you probably should break up".

There is some rationale to that. People tend to hold onto relationships that don't lead anywhere in fear of "losing" what they "already have". It's probably a comfort zone thing. So if one is desperate enough to ask random strangers online about a relationship, it's usually biased towards some unresolvable issue that would have the parties better of if they break up.

Maybe I'm too much of a hopeless romantic, but from my perspective and experience, when someone is good for you, you'll fight for that relationship regardless of what others say, and conversely when you're in a situation where your actively asking and willing to consider "leave" from someone who isn't a very close friend or a therapist as applicable, then it's likely you're looking for external validation for what you've already essentially decided.

Wait, other people don’t make decision trees and mind maps and pro/con lists and consult chatbots before making decisions? Are they just flying through life by the seat of their pants? That doesn’t seem like a very solid framework for achieving desired outcomes.