How much better has President Biden performed, than his detractors said he would in 2020?

His detractors kept saying he was going to bow out to Kamala within his first month. Even the most generous gave him a year. Some even thought Trump was going to somehow take over through some weird misinterpretation of legal history.

His detractors didn't even think he'd be in office for this long, so he's already blown out their expectations.

Assuming any of them did think he'd serve this long, I'm sure they expected America to become a socialist hellhole and belong to China at this point. It's the same two talking points they keep reverting to anytime a Democrat so much as speaks

No one could have predicted this disaster

There hasn't been any accomplishment that has proven to be a benefit so his net performance is pretty much as expected so far.