Hmm...
I use AnySoftKeyboard instead of the default android keyboard or the Samsung keyboard just to preemptively avoid these kind of “issues” creeping up in the future.
Should I still be worried?
Is there a way to sandbox or scope the software keyboards to never see the network (wired ethernet, Wi-Fi, LTE, 5G or otherwise) on stock Android 13 ?
Other than:
Settings > Connections > Data Usage >
Allowed networks for apps > {app} > Wi-Fi only (and not use Wi-Fi) or Mobile data only (and not use Mobile data)
and
Mobile data usage > {app} > Allow background data usage > Disabled
Moreover, there is no "Network Permissions" setting option from what I can see even within Permission manager > Additional permissions.