There’s already a huge boundary layer where high pressure hydrogen in the sun is exposed to the fusion of the inner core and not fusing. The only possibility for the sun going boom is that there is another, higher, self-sustaining fusion rate (or at least, taking into account pressure changes once you start fusing), that has never been accessed by, e.g. proto-planets falling into the sun.
This has not been adequately demonstrated by the paper you cite (they make big approximations and don’t demonstrate that they get back multiple possible fusion rates), though I can’t rule it out from what I know.
There’s already a huge boundary layer where high pressure hydrogen in the sun is exposed to the fusion of the inner core and not fusing. The only possibility for the sun going boom is that there is another, higher, self-sustaining fusion rate (or at least, taking into account pressure changes once you start fusing), that has never been accessed by, e.g. proto-planets falling into the sun.
This has not been adequately demonstrated by the paper you cite (they make big approximations and don’t demonstrate that they get back multiple possible fusion rates), though I can’t rule it out from what I know.