Being critical of someones opinion ≠ critical thinking

Critical thinking is the process of analyzing available facts, evidence, observations, and arguments to make sound conclusions or informed choices. It involves recognizing underlying assumptions, providing justifications for ideas and actions, evaluating these justifications through comparisons with varying perspectives, and assessing their rationality and potential consequences. The goal of critical thinking is to form a judgment through the application of rational, skeptical, and unbiased analyses and evaluation.

https://en.wikipedia.org/wiki/Critical_thinking

You are just being contrarian, not critically thinking. Big difference.