Since Fedora 37 is the default template for the network qube in Qubes and since Fedora 37 by itself (with the drivers it has) can recognize a USB Modem in Network Manager (“Settings” in GUI), then there should be a way to use a USB Modem to connect to the internet in Qubes. If I send USB PCI devices to the net qube via qube settings, shouldn’t the modem connect? I think a command* is required to integrate that connection.
*Footnote: “Guards” attacking innocent civilians they have exploited in a nominal free country have a way to completely terminate Qubes with a few second wireless connection because they fear “trend setting” but why don’t they destroy anything connected then? Too strong security so they cant frame people and steal their data?