Was I wrong and should he have blocked me?

Today I got blocked by a classmate of mine on Instagram. Well what led up to this was how I felt that I was being treated by this classmate. This person was known by some to be a douchebag, arrogant and etc. I didn't want to judge by what others would say so I decided to extend kindness and see for myself. Well he turned out to be very cocky and when I tried to work with him in class on a project, the way he treated me was as though I wasn't that important and I felt brushed off a lot. It was always me initiating the conversation as well and trying to be helpful and offer helpful resources. So even the conversations seemed one sided. Even though I tried to still remain kind to this person I was always for the most part ignored when I tried to reach out through message or anything. Well I decided to bring it to their attention and maybe I went too far I don't know but I sent them an email in regards to us working on a school project but I also expressed how I felt. I told them that their energy felt very self-centered, egocentric and dismissive and somewhat rude. I did tell them that I was in no way trying to judge them but that is the energy that I felt from them and it just did not feel pleasant. Well next thing I know they go on instagram and block me. When I found this out, I didn't feel anything from it and was kind of like well at least I know now. Do you think I was wrong to express how I was being treated? I also have class with this person tomorrow. No i'm not going to say anything to him at all. I will just mind my business. Please be kind with your response is all I ask.

Was I wrong and should he have blocked me?
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