I watched the hearing and had a different takeaway:

There are UAP interfering with military training exercises and in American airspace, and there doesn't exist a reliable mechanism to report these or to address them given the stigma around UAP, and there should be one for safety reasons. At the very least, I felt the pilots made a compelling case here.

Now, if somehow there were indeed crashed alien crafts, I wouldn't be surprised that private contractors and defense agencies would want to reverse-engineer these technologies to obtain a military advantage over other nations.

But there's no proof of this, so it's just an interesting thought exercise at the moment, in the realm of fiction.