Why in the world is the Chloe-Kendall-Maddie agegap exaggerated so much?

Oh my gosh, With how they act on the other sub you would think Chloe is a senior in high school and they’re 8th graders. Maddie and Chloe are literally like a year and a half apart and that’s it… And they started dancing at the same year. Same thing with Kendall 💀