If that pineapple is what you mean parasitic twin, then that's the way pineapple grow 😅

I remember the pineapple grower told me after harvesting this one, wait for a bit and there will be offshoot coming out from the side. Wait for it to grow a bit bigger then cut that thing from the base, peel off some of the leaf blade, and soak it in water(and change the water every two days or so) until the root grow, then plant that. He told me you will get fruit quicker than when you use the fruit's head. Cut off the original plant too, it won't fruit any more.