If you're looking for government waste to be outraged about I'm sure you can find something orders of magnitude higher than a failed R&D project.
It's things that like this over a very long period of time that got us the huge amount of debt we're in. The amount of bad spending doesn't matter - it is all very bad and it all contributes to the problem. Our current debt isn't just the fault of Trump, Obama, Bush, Clinton, etc... It is the fault of tens and hundreds of thousands of federal employees who misspent the taxpayers' money.