Why does the Trtl pillow have a lower star rating than cheaper memory-foam options?

The Trtl line in this pool sits in the high-3-star range across tens of thousands of reviews, lower than several budget memory-foam pillows. The wrap-and-internal-brace design is polarizing: it works well for people who lean to one side but frustrates buyers expecting traditional U-shaped cushioning. The rating reflects fit-and-preference mismatch more than a quality defect, but with no expert testing in our data we can't confirm that interpretation.