“Do you think my tattoo is cool?” No, I don’t. There are no cool tattoos. “Check out my sleeve!” Oh god ew.
Tattoos themselves are stupid. Doubly so if it’s some media IP. “I put Batman on my body!” “Look at this image of Goku on my calf!” I can’t think of many things I’d want to do less than that.
There are a few narrow exceptions. Chances are yours isn’t one of them.
If you personally like tattoos, fine. I’m not saying nobody should get tattoos because I don’t like them. I’m stating my opinion that tattoos are stupid, and I am stating it here because it is probably not a popular opinion.
I just don’t get why you’d constrain your question like that when “Do you think my tattoo is cool?” could be implied in the interaction because, like you said, people don’t talk like that. But people do mean it when they’re fishing for compliments. So you’re unnecessarily asking them to justify what could be interpreted a different way without conflict in meaning just like OP said. That’s what looks to me like you’re attempting some gotcha question after being given a reasonable answer.
I didn’t constrain my question, that implies I had a different question that I changed. I asked the question I was interested in hearing an answer to. Op chose not to answer that question, so I speculated as to why that was. I was honestly curious if they had heard someone say the thing they put in quotes. That’s all. Arguably every social media post is just someone seeking validation, so that non-answer “example” rang extra hollow for me. Especially when my question was so unambiguous.