Seems to be just someone playing the “what if” game… Yes, McLaren is in debt, but they have found sufficient funding and good financial strategies to be self sustainable for the future, not only in order to subsist, but with enough additional resources to invest in their infrastructure and tools.
Could Audi buy McLaren? Yes… There are a lot of companies out there that could potentially buy McLaren, the question is if the investors at McLaren would be willing to sell it… On the other hand, when buying McLaren you aren’t just buying an F1 Team and it’s capabilities, you are buying a brand, would Audi buy McLaren and eliminating the brand? Also, McLaren automotive for the most part exists due to the McLaren F1 race team, whomever decides to buy McLaren would have to buy both since the potential value of McLaren automotive would be diminish without the F1 Team behind it.
I could see the VAG group trying to buy McLaren (just as they bought Lamborghini for example), but it wouldn’t be so that Audi would take over as the brand showcased in F1.
Finally, it is just a a rumor or even better described as a hypothetical scenario thrown out there for some clickbait… That of course is just my opinion.