There is a Japanese slang '脳死', which originates from a medical term that literally means '"brain death". On the other hand, in slang usage, it's used to indicate thinking nothing. It can be applied in various contexts. For example, mindlessly playing a video game is called 脳死プレイ, and performing a task that requires no thought is referred to as 脳死作業. In general, 脳死で〇〇する implies that you do something without thinking.
I see the tendency occur on social media platforms and even here. It’s 脳死いいね. It’s like you press the good button without considering the content of posts and comments. I felt something a little wrong when I saw some people push the good button for posts regarding the strong earthquake that happened in Taiwan. I used to press it whenever I corrected posts and people responded to my comments because I thought this was a gesture of courtesy. However, I’ve come to realize that my behavior could be the opposite of something sincere. I also think these kinds of actions can deteriorate your independence.
I think this relates to what I mentioned, so let me share a quote from Takashi Tachibana, a writer I admire, who was involved in brain research:
It matters how you evaluate it regardless of others’ opinions. Even if everyone except you praises it but you think it's bad, then it is. Even if everyone except you boos it but you think it's good, then you should shout bravo. When your evaluation conflicts with others, you may lose confidence, but you shouldn’t. The evaluation always depends on something independent. It should be unique and individual. After all, the trajectory of our lives remains as the summation of the time-series evaluation. The evaluation you make and your unique behavior based on it remains as the proof of you having been alive.