0days ending in RCE (multiple!) for presumably closed source software are for the lack of a better phrase, labour of love. You run the exact same versions running on the target, blackbox test, fuzz it, craft an exploit, test, perfect it. For exploits which are of the memory kind, hook it to a debugger, decompile and what not. The exploits mentioned here seem to be code execution directly while processing input. Huggi…
I don't think they have any real motive to shill OpenAI, probably closer to the opposite since they're so involved in open weights