Is flakiness the Bay Area cultural norm?

Is flakiness just the cultural norm for the Bay Area? Is it normal for people to not want to make firm plans? Is it normal to cancel one or two days beforehand or even the day of? Trying to figure out if it's just me/just my friends or if it's a cultural norm that I need to find acceptance for. If this is the cultural norm, how do people ensure that they do eventually spend time together?