Silence is consent. This election is a referendum on Trumpty.
And while Biden wouldn't have been my choice, I don't see why he wouldn't be yours: I'd prefer someone more "progressive". However, I don't think Biden's necessarily "weak". Weak on what, specifically? He did a decent job as Obama's VP.
He wouldn't do anything crazy. He'd pick good advisers, and that's a president's most important job. He doesn't think he's God. Or a dictator.