> In your link, Trump says: "I’m not talking about the neo-Nazis and the white nationalists -- because they should be condemned totally".
BUT HE IS.
The people he is talking about that he is separating out ARE white nationalists.
They are not carrying Nazi flags. They are not chanting "Jews will not replace us." If you asked them point blank, they wouldn't dog-whistle anything about "we don't think blacks are inferior, we just want a separate but equal society".
But their actions are aligned with white supremacy. Their obsession with the Confederacy and their generals is an expression of white supremacy. They are not interested in heritage. They are interested in perpetuating old power imbalances that keep "the poorest white man above the best black man".
> Regarding bleach, "So it'd be interesting to check that" is a suggestion for medical research, not a recommendation for what patients should do now.
That's now how supporters received it.
In both cases you give him the benefit of the doubt. His intentions are not to support white supremacy. his intentions are not to have his supporters drink bleach.
However he has a job, which is colloquially described as "the most powerful man in the world". That has responsibility. His throwaway lines embolden white supremacists who ABSOLUTELY seized on "fine people on both sides" just as much as the left did. His supporters do hear his guidance to the medial community and jump to the next conclusion.
Who is it that repeats the "fine people on both sides" comment again and again, never mentioning Trump's explicit condemnation of white nationalists? It's not Trump, or the Republicans. It's Democrats and the Democrat-supporting news media. If there are any white nationalists taking comfort from the (incorrect) idea that the US president is sympathetic to their cause, it is not Trump's fault. It is, to be blunt, YOUR fault.
And the same for bleach. Why did the news media portray Trump's comments as a recommendation for people to drink bleach, rather than (correctly) portray him as suggesting research into something related to bleach? (If they have to criticize Trump, they could then mock him for thinking he knows anything about what the promising directions in medical research are.)
We all know why, don't we? They prioritized political gains over lives.
ADDED: To address your other point: Sure, one might be able to argue that people wanting to keep up a statue of Robert E. Lee are really more or less white nationalists. Just as you can argue that people in favour of a minimum wage are really more or less communists. Conflating these "more or less X" views with actual X is not a recipe for maintaining a stable democratic society.
How clearer could he have been?
Regarding bleach, "So it'd be interesting to check that" is a suggestion for medical research, not a recommendation for what patients should do now.