Because defeatism appears to be de rigeur lately. Never mind that there's litigation galore brought by Pres. Trump's attorneys. Never mind that there are armed vote tabulation observers in certain districts. Never mind that this matter is a long, long way from being over. Never mind that a new, conservative Supreme Court Justice was just sworn in.
No defeatism.
It is an OBSERVATION. By tomorrow Biden, at the rate he is picking up votes will be ahead of Trump.