Here's the thing - Obama won both his elections without the majority white vote. Some of that is conscious racism, the other part is subconscious bias, where people vote for what they identify with. Not all people, but some, and we're talking exclusively about the "some" here.
Similarly, the black vote then went down for Clinton compared to Obama. Again similarly, white women voted more for Clinton than Obama. It's just human nature rather than racism/misandry etc. Just a simple reality that has played out in every election since the dawn of time. If Ocasio-Cortez ever runs for president, her Latino voteshare will dwarf anything Obama/Clinton/Biden could ever get - it is what it is.
What also happened in 2016 was third party candidates got a lot more votes than usual, due to dissatisfaction with the candidates. Both Johnson and Stein trebled their vote count.
So, with Biden not massively enthusing his base in the same way Obama did, and Trump being unpopular, the door is open for third party protest votes to soar again.
So no, not a mistake - again, I was pointing out the primary threat for the above reasons and what the whole point of him running is. It's plausible for him to get, say, 0.5% of the vote in any given state. If that state is Florida, you're talking 50,000 votes. If Michigan, it's 20,000 votes. These are historically enough votes to turn an entire election, and it is very valid to state that the primary aim of West running is to dilute the black vote inparticular.