Yup, we certainly need that rear wiper here, especially in the winter months: snow, ice, road salt, etc.
Too late to reinstall the previous wiper arm, it's now landfill. It did however appear to be the exact same design as the one I replaced it with, complete with spring and spring tension.
On that note, maybe the one I tossed was not the original either(?) Or maybe it was the original, but the spring was no longer strong enough to provide full contact - and it's replacement came with a weaker spring right out of the box? (that one was an Amazon purchase btw).