My point is that you said they did. If they actually did not, then it comes across like you are putting words into their mouth. Do you see how this comes across as part of a criticism which says they themselves are over-interpreting the data?

"it seemed to me"

And it seemed to me it was an outright racist statement. Even if somehow it was not, it was definitely an own-goal given the heavy scrutiny he faces. I cannot conceive of how anyone would think those phrases would result in useful, effective, or even interpretable irony or sarcasm.

It's like the justification, after someone has made a horribly racist, bigoted, sexist, or otherwise insensitive statement that "it was only a joke" - where is the humor? Furthermore, people do use "jokes" as a way to test the water; a 'trial balloon'.

Since you don't think he's racist, then in the context of a thread on his seemingly racist statements, would it not be appropriate to address the topic at hand, rather than simply say that you don't think he's a racist?

"I wanted to point out that the SPLC is not an honest or trustworthy source."

Then you should have said so outright. Your previous statement only said that you didn't think there was enough information to conclude that he is a racist. I agree, the SPLC doesn't provide enough information to make that conclusion. But that wasn't their claim, nor did you say anything beyond their analysis of this one situation.

To restate your own words: "I don't really care to defend [the SPLC] and don't watch/listen to most of any of the content [they produce]. I do follow [others who do], and from what I've gathered, while certainly [more sensitive than I am and not immune to error], [they are not unusually dishonest or untrustworthy]."