Corporations should only return cash to investors (via dividend or stock buyback) if they do not have a high yield way to invest the money internally. A large stock buyback is the corporation admitting they do not have good uses for the cash. If Intel would take these grants, tax credits, and low interest loans and turn around and increase their dividend or do a large stock buyback then this would be a simple wealth transfer from the US to Intel stock owners. Even without this cash flow, these large grants feels like this unfairly benefits Intel shareholders at the expense of US Tax payers.
Intel's last stock buyback was in Q1 2021, which was $2.4B. There were $14B in buybacks in 2020 [0].