Thank you for the report, unless I am misunderstanding he is saying these “theories” are the truth, given the context. Could have been worded better, but in this part

There are obviously true conspiracy theories, many are widely believed by the left and many are even public record at this point.

I think he is saying these are true even if some people call them theories. I interpret the thread as

Only right wingers believe in conspiracy theories?

yes

I disagree, I believe all these to be true