I generally agree with your point. OpenAI committing to buying a bunch of AMD hardware and doing the work to integrate support for it in their systems is a risk for OpenAI and a benefit for AMD (as demonstrated by the AMD stock popping on the announcement). So the warrants give OpenAI equity upside to offset risk.

I think the skepticism comes from the recent OpenAI/Oracle deal which seemed kind of circular due to paying with equity whose value was being inflated by the deal itself (if I understand it correctly). This deal seems more like an outright gift of equity if OpenAI goes through with the deal - so it could be thought of as almost a rebate or net discount on the cost of the GPUs.