Yeah, but if, like OP, the intent of donating your body is to ensure that one exploitative industry (the funeral industry) doesn't profit from your death, you probably also want to make sure that other industries (like the military industrial complex) that you also don't like aren't going to be able to benefit either.

Weapons are good enough, fuck those guys. If I'm donating my body I want it to be for something useful, like improving medicine or surgery

Sanity in the comments. Huh. Interesting find

In a sense, that's true. But we're also talking about making arrangements while we're alive, knowing that our wishes now will translate into action later.

If I plant a tree so that my grandchildren might enjoy the shade, I'm still making a decision to do something based on what I believe the effects will be after I die.

So if we're making decisions on where or how to donate our bodies after our deaths, we'd still generally want to choose a worthy cause.

Not that I’d personally care, but I don’t know that I’d trust that they wouldn’t just ignore those instructions. Who would call them out?

Testing how shit blows you up is a weird way to describe 'helping people'