Re: "too hot for life at 150°C" ?
Given that life is likely to first evolve in water, if it evolved in deep water it might be cooler than that and would definitely be at higher pressure meaning a higher boiling point.
I think life could easily evolve on such a world. The question is whether complex life would be possible, but given that we've got a sample size of only one world on which life has evolved, there's a good chance that life is viable at a far wider range of conditions than what we have on Earth.
The trick might be recognizing it as such, if it is microorganism scale. If life inside a star was possible, not only would it be almost impossible for us to recognize as such it would be impossible for us to even be in a position to recognize it. It would be as cut off from us as deep ocean thermal vent life is cut off from grizzly bears.