Is OTHER wrong in the post ? POST : (To preface, I'm a part of an engineering club at my school and have been given a title pertaining to leading the design process for our projects. I've known the team captain for a little more than four years now, though only got to be close friends in the last year after I joined this club.)

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To the actual story: my team was recently issued a new challenge. To simplify, we have to design and build a robot to pick up and place different manipulatives at different heights. During the first week of our building period, the team spends a lot of time brainstorming and drawing up ideas for possible solutions to the problem. It seemed like every single time I'd try to even suggest an idea for what we could do, it'd be immediately shot down by the team captain. This happened with just about everything relating to our robot, and eventually, I just gave up, and just went with whatever the rest of the team and he decided on. (Since apparently he was fine with taking suggestions from them; can you tell I'm still a little salty about this?) 

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At one point, we (the leadership team in the club) were discussing the final direction were looking for the robot to go in since we needed to get started with building. I suggested that we attempt to build a system to shoot one of the game pieces (a ball) in order to get it up higher. I was immediately met with "That won't work because we tried to make a shooter a few years ago and it didn't work." (No other explanation. Keep in mind I wasn't around the club when this previously happened, so I didn't know.) I hung back from the conversation for a little bit, but noticed something just a few minutes later. Team captain suggests to get the ball higher we should re-use an elevator system we built last year. One of my friends in the club asked if it was wise to try and re-use it since it didn't work before and our captain immediately responded with "We can make it work this time." 

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I know he means well, but it felt insulting to be given this title of "Design Lead" and then be completely ignored in terms of design. I got upset, and in a private message, (we'd been in a team Discord server up until this point) said that he was being hypocritical to immediately shut down my ideas about re-using concepts from past years but to be accepting of it when he came up with it. He responded to me with a curt response that went something along the lines of "you don't know what you're talking about." He later told me that it made him angry that I'd suggest he was being hypocritical when he just didn't want to spend time dwelling on ideas that he knew wouldn't work.

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We've talked it over (thought not to the extent that I would have liked since I still don't really feel like he gets how terrible I felt about being so useless for a whole week.) and there isn't any bad blood between us. That said, I figured I'd ask for public opinion since it's been eating me up inside. AITA/too sensitive?

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TL/DR: My ideas for a group project were being ignored and I called the person shutting me down a hypocrite for it, making him upset. AITA?