Matched on FB dating. Was I being too sensitive?

So for one of my prompts I added that my greatest achievement was losing 180lbs naturally. That was his first message to me. I don’t know why but I was kinda put off from the beginning when he didn’t include a simple congratulations or you look great. He went into asking me questions. I wasn’t bothered by that because I also love learning and hearing about people’s experiences. I could have been being sensitive but I felt like by his tone he would have argued anything I said about how it wasn’t natural or actual clean eating and that he would have used that fact that nutrition is what hes currently studying to patronize me. The last part is only how I feel and I could easily be wrong about his intentions