Number of dudes I've had tell me they were "nice guys": I've lost count at this point.
Number of those dudes that turned out to be actually nice guys: exactly none of them.
I mean, that's probably not relevant, but still, lived experience. Niceness is determined through actions, how you treat other people. I can tell you right now whether you intend it to show up or not, the snide sort of condescending tone that pops up in most of your posts when there's a dispute in husbandry practices is what rubs people the wrong way. Maybe try to watch for that and you're interactions will go smoother?