The Cure for Toxic Positivity is an article by Rebecca Renner, a journalist and fiction writer who's bylines include the Washington Post, Paris Review, and Tin House.
I've wondered if I am just naturally contrary partly because my mind leaps to "evaluate" words, sentences & thoughts for their energy content. And because I had not seen/heard anyone talking about too much positivity. This article, then, was encouraging. Many commenters felt the same, and some pointed to books and other articles. As a result, I've learned there are Many more such resources for those interested.
And I've got one more reason to trust my intuition. :)