Why the other Bijuu and Jinchuriki can't use baryon mode the way Naruto did. And why it's unique to Naruto and kurama. What people don't understand is kurama is WAY stronger than the other 8 bijuu, he has ALOT more chakra. Half of the 9 tails chakra is stronger than 6 of the bijuu combined as kurama's bijuu bomb matched the rest so both half's of the 9 tails is a MASSIVE amount of chakra. Naruto was able to supply the entire shinobi alliance with this chakra. Kurama himself stated that the strength of a bijuu was determined by the number of tails it possessed, he could be thowing shade at the other bijuu however Kurama just so happens to be disproportionately stronger than the other bijuu. Kurama's Baryon mode burned all his chakra and Naruto's chakra together (Naruto is an Uzumaki with a enormous chakra reserves also stated to have 4x more than kakashi with that much chakra they can create new source of energy similar to nuclear fusion. Naruto in base having chakra comparable to kurama made the mode possible. Other bijuu could attempt it but the chakra wouldn't last as long so the mode would be very short. Also Other Tailed Beast wouldn't be willing to die for their jinchurki. Also kurama is very intelligent more so than people give him credit for and came up with this method himself. The 10 tails was mindless...well until boruto two blue vortex chapter 4 but that's another story my point is the 10 tails wouldn't sacrifice itself for a baryon mode either