This assumes that SpaceX's decision maker decides to prioritise cuts to repay bondholders over R&D to see if they can innovate their way to bigger profits, which doesn't seem a sure bet (tbh I'd put SpaceX under its current management very low on the list of companies likely to do this)

I mean the bond yield is 6.65% over US Treasury returns of 4.75% so it's not like everyone's running in fear of their imminent collapse either. But they're less confident than they were when Elon company valuations looked immune to gravity.