Probably a conclusion people come to when they compare US police looking more like the US military every day, while their local police doesn't go in that direction at all. At least that's true for me as a person living in Spain but sometimes seeing the really crazy equipment US police seems to have.
It also seems like in 2015 there was limits added that made it so "the military was restricted from transferring some weapons, such as grenade launchers, weaponized vehicles, and bayonets to police". Why was that restriction needed if the police isn't becoming more and more like the military?
Really? Do you realize that the amount of civil asset forfeiture has exceeded burglaries? The militarization of police is absolutely a huge problem. As is mass-incarceration for non-violent crimes, over-criminalization, no-knock raids, etc. They just raided a dudes house for a squirrel.
And no, I don't advocate for the idiocy in CA where they legalized violent crime as a petty response to having their budgets threatened.
Obama went so far as to say the following when trying to reign in the 1033 program in 2015
"We've seen how militarized gear can sometimes give people a feeling like it's an occupying force as opposed to a force that's part of the community that's protecting them and serving them ... So we're going to prohibit equipment made for the battlefield that is not appropriate for local police departments."
Private citizens can actually buy mine resistant vehicles. We can even buy main battle tanks - though the turret needs to be disabled without a Destructive Device permit.
With a Destructive Device permit, you can also buy a grenade launcher.
We don't sell predator drones to local police departments. Police use the same commercial drones any other private citizen can buy - though cities often restrict whether non-police can fly them.