alt Hacker NewsThe spec doesn't mandate such behaviour, that's up to the user agent to implement.
I've had to deal with plenty of people who couldn't do things like use Jitsi or other web apps because they missed or denied the permission prompt before reading them. The tiny icons in the address bar are barely recognised as clickable items by most users, which is a good thing for toning down annoyances but an awful inconvenience when trying to help people.
In a few cases, the solution to "accidentally dismissed permission popup" was "make everyone else download an app full of trackers".
Jitsi is about audio / video where this would make more sense, not about geolocation.
Geolocation based on IP address is always done in the background, so they already know what city you are from. But Google wants to have the nice high-precision location from our GPS chips so they can permanently associate the IP address, and available WIFIs/Bluetooth/network devices and all related MAC addresses to a specific building.
And they want to have this specific functionality so they can organically trick non-power-users who got accustomed to the permission popup dialogs into re-sharing their location.