Half of America bet the farm on a demented old man (& co.)

Edit: to be clear, this post is referring to Biden's degraded mental state, its role in his loss, and why people didn't organise more energetically during his term instead of now, when they say it is much more difficult.

Especially given how bad things looked given the lowered capacity of the previous leader.

Apologies for any lack of clarity.

Original post:

Why did civil society not vigorously organise during Biden's term? Did people really think it was not a hugely risky bet to leave it all up to career politicians operating in open corruption, especially when they'd not held Trump accountable for his very obvious federal crimes of violence against the government (as opposed to state-level financial crimes)? And especially when their leader was obviously mentally unfit?

It's very shocking from abroad. Can someone explain how such a thing has happened?