Yea from the article it’s pretty much just that it’s hard to go through the process of getting approved to get the loan and proving that it’s worthwhile to the government.
“One hang-up has been a requirement that companies get funding from private investors before the loans can go out. The program’s rigorous due-diligence process, higher interest rates and slowing growth in electric-car sales have made it harder to get deals done.”
Doing some quick searching, it seems that we currently do not know how the plane crashed. It was in the air on a mission to shoot down cruise missiles, and after doing that on the way to another target they lost connection. It will likely be a while before we know, both because it will take time to investigate but also depending on what the cause was they may not want to release it publicly for a while.
Slightly more informative article I found: https://www.nytimes.com/2024/08/31/world/europe/ukraine-f16-pilot-crash.html