The interesting question here perhaps isn’t so much whether knowing if you are a particular color or 4-letter Myers-Briggs combination helps you or whether there is a solid foundation to the categorization at all. What’s interesting here is rather: what happens when you think of everyone as a pigeonholed category. Intuitively it seems it should be mostly negative especially if the categories don’t even offer any beha…
Obviously, yoga is a movement practice and thus, one could write a very practical book about the muscles, ligaments, and tendons, how to foam roll and massage to enhance yoga, how yoga has scientifically proven health benefits, etc.
Similarly for mindfulness, you look at Joseph Goldstein's book Insight Meditation, and it's mostly a combination of stories from his life as a Buddhist in Asia, alongside his learnings from Buddhist teachings. Nowhere does he claim it's scientific nor does he attempt to use pseudoscience. He stays in his lane and the book is a great one.
So, friend, I'd say don't besmirch two very ancient and healthy habits which have aided millions of people, especially when you give zero pieces of evidence while seemingly not actually knowing those fields.