I don't think Iseijin was being disrespectful to you... Although I admit I don't really understand his posts at all.
Just chiming in, I also don't think Iseijin was trying to be disrespectful. Looked like a language barrier issue to me ... maybe he was trying to say he doesn't have time for your mod yet because he's still finishing Xeno Operations? Why would he bother posting to compliment your mod while insulting it at the same time? Unless he was "negging", in which case hellrazor he was hitting on you.
About a year ago there was a japanese guy called 'kamigaminokoumaouji' who was claiming on his last posts that the university police had hacked his account, IIRC. He was spamming threads with posts of his 'top secret mod' that he was working on, which would have tons of features and how it would be freat, and telling other people who they would help him with his mod that came to nothing, because no one wanted to do the work for him, as expected. It was simply impossible to have a relevant conversation with him because of his nonsense answers, which would usually end like 'please don't ban me', so he did had some idea that his attitude was not the most correct one, but since he continued with it, well eventually he got banned.
I don't know if IseijinBoueiSenben97 and kamigaminokoumaouji are the same person but the behavior pattern of both is almost the same. Either way, I got tired of this b.s. type of behavior a year ago - I've worked plenty with language barriers involved and they aren't a major issue if both people have the same goals and want to understand me as much as I'm trying to understand them. Which clearly is not the case here.