Saqifa Bani Saaida In The Light Of The Prophet Choosing Quresh
It doesn’t matter how many people knew about this, because the demise of Prophet (SWS) itself was a big event resulting in disruption and choas among muslims in addition to emotional turmoil. And when emotions are this high, people can easily forget things. But as soon as they were properly reminded of this fact through AbuBakar (rta), no one hesitated for a single moment to accept him as their caliph. I think It has to do more with human psychology than any ill-intent on anyone’s part.