His motivations for donating a sefer torah were not really the main point of your argument, and was not really much of an attack either.
And I don’t think you did call anyone a rasha. Although, now that you mention it, I would be happy to do that for you (Weiss is a rasha, weiss is a rasha, weiss is a rasha).
You did call him a publicity whore. I have no idea if he is or isn’t, so if you say you don’t have information that he is, then I applaud you for apologizing.