your source is
one guy apologizing for racist remarks, and you're extrapolating that out to concur with the previous replier's assertion that this is an example of "the horrific hatred directed at Obama that's only really explained as racism"?
to paraphrase you: just because you can find someone who dislikes Obama because of some racial reason, that does not prove the pervasiveness of racism as a factor in the vitriolic hatred directed at him.
I thought by 2023 we could all be mature about this and agree that, sure, there was a nonzero amount of racist hate for President Obama during his presidency, yet the idea that, in general, negative sentiment toward him can be exclusively attributed to racism, is absurd.
do you really believe that anything other than a tiny, statistically-insignificant minority of Americans in 2008–16 disapproved of their President based upon the color of his skin? do you really believe that anything other than a tiny, statistically-insignificant minority of Americans today, in 2023, are overtly racist toward black people based upon the color of their skin?
(I also note that you chose to not respond to my assertion that Obama did not really do anything for black Americans specifically, during his two-term presidency. he was elected on the promise of Hope and Change, and while he gave plenty of the former, he utterly failed in executing on the latter. ditto for my assertion about Obama's successor.)