- the most obvious was mentioned already: forest fires, when missiles explode in a forest you are trying to protect, things tend to burn and fire tends to spread i.e. there might be little forest left to save after you're doing killing everyone who has bad intentions.
- where do you even set these up that they arrive on time to actually hit moving targets?
- how do you ensure you don't kill innocents?
- how do you even _find_ nefarious actors, when forest canopy makes it very hard to find anything, not to mention the Amazon forest is mind-numbingly huge.
- AFAIK the military generally has an inventory of weapons they have to keep stockpiled, so the tax-payer will pay for extremely expensive weapons to be used and built again (great if you want to support military-industrial complex).
As stated elsewhere, the issue is deeper and not addressable by blowing people up. The people doing this have nothing to lose because they have little or no opportunities for making money, so they take any job they can find. Do you believe we should just murder people who make questionable decisions based on their survival? You and I are sitting comfortably behind a computer having this discussion and I would venture that neither are us are qualified to talk about what it's like to be that close to starving.
- poor starving people just trying to feed their families and in order to survive, will take any job and are being exploited to this end by <cartels/greedy corporations/etc>
or
- dirty scumbags killing innocent animals and cutting down swathes of protected forest just to make a quick buck
or any other narrative that sells clicks, not to say all media is corrupt/greedy, but it sure seems like most public reactions are based on media narratives.
That said, if you entirely removed morality from the equation, I suspect it would actually be an efficient use of resources, to 'surgically' target varying levels of unwanted enterprise to make a somewhat dissuasive point.
The only challenge I see is that the folks running the saws and the skidders aren't the ones profiting from the operation. So maybe you take some extra precautions to avoid killing the crew, but destroying the equipment seems like a perfectly acceptable use of resources.
You seem misguided, rainforest is not equivalent to high humidity or rain all year round, you absolutely have wildfires and it is not a 'pretty low' risk. [0]
Also most of these operations are lead by organized crime and explore poor people in their day-to-day operations. Killing desperate and poor people that work on these illegal operations seems like a very disproportionate colateral for anyone that cares about upholding rule of Law, or you know just general ethics.
[0] https://en.wikipedia.org/wiki/2019_Amazon_rainforest_wildfir...