There could also be selection bias in who you talk to based on GlassDoor ratings: if a company has a good reputation in the industry but you just weren't feeling the connection at the interview, you might be tempted to override your feelings because "everybody else likes them, so maybe there's something wrong with me".
This is a commonly-observed effect in hiring (where oftentimes candidates who get one bad interview score or who have unconventional backgrounds do better in eventual job performance, because for them to get hired despite that obvious failing, there had to be a strong subconscious fit) and in romantic relationships (where people end up marrying people who hold commonly-desired traits - wealthy, sociable, beautiful, talented, high social status, a particular race, etc. - but then end up unfulfilled because their desire to end up with "an X partner" made them overlook people who lack that characteristic but would've been a better overall fit).
This is a commonly-observed effect in hiring (where oftentimes candidates who get one bad interview score or who have unconventional backgrounds do better in eventual job performance, because for them to get hired despite that obvious failing, there had to be a strong subconscious fit) and in romantic relationships (where people end up marrying people who hold commonly-desired traits - wealthy, sociable, beautiful, talented, high social status, a particular race, etc. - but then end up unfulfilled because their desire to end up with "an X partner" made them overlook people who lack that characteristic but would've been a better overall fit).