Could the other browser extensions see the sites I visit when I use the VPN?

Hello, everyone. A bit of a silly question, but I was wondering if the other browser extensions can see and access every site I visit when I use the vpn?So for example if I was using a weather forecast extension, and I was using the vpn, would the weather extension be able to see my data?

No, if you visited a website etc. while connected to the VPN, it would only be able to tell that the IP is one belonging to a VPN service.

what would they even do with that information

This has little to do with any VPN. Browser extensions are in your browser and can access browser data. How much they can access depends on what permissions are granted to the extension. You’ll have to check your permissions in the browser of question.

Depending on the extension and what the default permissions are, most likely answer is yes. Using a VPN has no effect on this. A VPN protects the tunnel not the endpoints