You may need to clarify your article on this. You stated that these won't fit a Sierra because the start button is squarish in shape. Are you referring to the Sierra Denali (I think the AT4 as well) dash because my 24 Sierra SLT looks just like the picture of the button above. I'm guessing that is a Silverado in that pic. The following is from your article.
It DOES NOT fit: The refreshed 2022.5 through 2026 GMC Sierra. GM updated the Sierra’s interior with a distinct, larger, square-shaped push-to-start button that is completely different from the Silverado and Corvette design.