It’s a mostly standard view of Tolkien scholarship. They’re much more a medieval view of jewishness then something straight racist like say, JK Rowling’s goblins. As makes sense for an Old English scholar like Tolkein.
Ancient people, separated into familial tribes, outcast from their ancestral home, not really welcomed anywhere but tolerated some places, warrior poet tradition, noble ‘in their way’, beards, gold, noses.
Sprinkle on some Norse/Germanic for flavor and there you go. Though then you can get into the side conversation of Yiddish being a Germanic dialect/language.
Is your home connection down that much? I’d think that even syncing once every day or so would populate everything fine, and if you’re at home it should update over wifi.
I might just be spoiled because I’m the only one using mine and only for a handful of devices.