The word “centrism” does kind of imply a mix, or “center”, between two positions. I would phrase it that the word is used for basically anyone whose thinking doesn’t fit neatly into the “left” or “right” category, though - including people who are just lazily mixing positions, and also people who are really thinking outside the box but just happen to agree with a couple positions from those ideologies.
The word “centrism” does kind of imply a mix, or “center”, between two positions. I would phrase it that the word is used for basically anyone whose thinking doesn’t fit neatly into the “left” or “right” category, though - including people who are just lazily mixing positions, and also people who are really thinking outside the box but just happen to agree with a couple positions from those ideologies.