A few things...
This, if you ain't military you ain't shit attitude is ********. The comment about "mexicans" equally stupid and highly offensive. Furthermore, it sounds as if you've never been anywhere near the US Mexico border, know nothing of the topology of land at any given point, and haven't the foggiest clue about the Border Patrol's job.
Would I run my truck through a river? No...neither would most agents even with a "company" truck. I know for a fact that agents have had to pay for damages they've inflicted on equipment through their own negligence. Even if they didn't pay for it directly, earning a 30+ day suspension without pay tends to make a pretty serious dent in the average agent's lifestyle. So even if you aren't coughing up $60,000 to replace a truck, the prospect of losing a month or more in living expenses or worse, having to find a whole new job, tends to iron out the stupid out of most people pretty quick.
On the cost ot tax payers, Raptors simply aren't that bad a deal. Keep in mind that for decades, Border Patrol bought Chevy K5 Blazers, Ford Broncos, Ram Chargers and full-size pickups. As is the case with most LE agencies, by the time you're done sticking lights, sirens, radios, computers, gun racks, and other equipment in them, you've increased the cost of buying a vehicle significantly. But Border Patrol, because of the terrain they have to cover, typically had to do all of that and then turn around and spend additional money on lift-kits and tires for these trucks. Raptors are already "built" in that regard so all you have to do is add the normal police stuff. If you factor in what is likely to be a somewhat significant "fleet buyer" discount, Ford's Raptor is actually comparable in cost because there's a bunch of aftermarket vehicle prep that doesn't have to be done for use off road.
Border Patrol is not a bunch of HS dropouts. As a matter of fact, the hiring process of most LE agencies has become so competitive that those lacking military experience or a college degree need not apply in many cases, especially at the federal level. The days of signing up with a law enforcement agency and getting hired on just because you can read and type are long gone. There's way more to the job than donuts and guns, junior and you'd do well to pay those men and women the respect they are due because your posts suggest you wouldn't make it past the interview process, let alone, survive the academy and probation.