"Try also resetting your network settings if the problems persist after the system update."
I has to do that recently due to a problem with Google Fi. I lost every single one of my wifi connections, and I had a lot!
Are these wi-fi connections that require you to enter a different password for each? That would be the main reason I can think of that would be a hassle. It shouldn't be too problematic to reconnect to public wi-fi networks.