One, VP is a ceremonial role. And if Biden failed at what Obama gave him, well... he still later became President. So...

Two, you make a compelling case that something is up regrading Harris as VP. She just hasn't been that visible. Of course Biden's kept a low profile, esp. compared the the egomaniac before him. I don't know I'd go as far as you, but I'm wondering what's up there as well.