This is exactly what I was talking about when I first saw Olympus Reptiles demo "this awesome rack"...
I even commented on his YT page about the connections and how the tape doesn't have solid contact with the tub. He replied they were awesome racks.
Fast forward 2 weeks and his opener is "sponsored by TGR" so go figure. If nothing else his video help me avoid purchasing their product.
If you are in SoCal I recommend Spideys Reptiles, he makes some great racks in both melamine and PVC and his quality is unreal. I even had him make me a 3-12qt tub setup for quarantine purposes...