It isn't his fault that the devices contained pirated games on the included microSD. He may not have gone through the due diligence of saying "I will not provide links to games or BIOSes" and he caught the ire of the police once he got too high of a profile.
Nobody who buys these devices will do that. These devices are anywhere from $40-80 (with some niche devices in the $150-200 range). Dumping hardware is a niche within a niche and better suited to preservation efforts than the average consumer.
Beyond that, the retro market is insanely overpriced right now, and even if you can afford everything, there's no guarantee it will forever be in working condition.
Persecuting people and not providing future-proofed access to these games through the existing market doesn't help fight piracy. It only reinforces it.
Moral/legal hangups aside, I think it's better for gaming history to live on through these devices than not. I do not want a corporation to tell me what parts of gaming history I can and cannot consume.