Leftist started grumbling about Biden's inadequacy right after he barely won the general. They started yelling after he sold out railway workers. They started sounding alarm bells once his polling started to trail Trump's during the latter's multiple concurrent criminal cases. They started screeching once the genocide started on Oct 7.
For you to sit here now and throw your hands up saying "well its too late! we don't have an alternative!" does nothing other than show how ignorant you have been these past few years. Your head has been in the sand, and this backslide into fascism we're seeing now is the only logical conclusion. The leftists were right about Biden all along, and that is becoming increasingly clear as time goes on.