TBP is also very cavalier about basic interactions with energy. To make a sophon, I kid you not, the aliens unfold a proton into a 2D sheet that they wrap around their entire planet. The unfolded proton has the same mass as the folded one (explicitly stated), but far from being invisible, it actually blocks all incoming light from their sun. That's orders of magnitude more energy than it takes to shatter protons in particle accelerators, smashing into the sophon for days on end, and it just... holds together? And then it gets to Earth and can apparently move and fold and unfold on its own and intercept all of our communications (which should also shatter it).