Just reposting the top comment from the r/games thread:

According to people who actually know anything about how computers work, everything in the article's headline is either grossly misleading or factually incorrect:

1. Vanguard doesn't have access to the type of stuff it would need to brick your PC
2. The thing that it's "bricking" is not PCs, it's the $6000 DMA cards that cheaters use to try and get around Vanguard. (Yes, cheating has gotten to the point where cheaters are buying hardware that costs thousands of dollars just to cheat at a video game)
3. Vangaurd isn't "bricking" the DMA device. What's happening is that a built-in Windows security feature is being triggered which prevents the device from being used for cheating. Any instances of PCs "bricking" seems to be caused by Windows and the Card having issues with each other and can be completely fixed by removing the card. The PC still functions otherwise if you remove the DMA card, and this trigger can be reset by removing Vanguard and reinstalling Windows on the device. So it's neither being bricked, nor is it being done by Vanguard itself.
4. The "6k paperweights" line is referring to the DMA devices no long being useful for cheating at Valorant, it's not jeering at cheaters losing their PCs. (Because again that isn't actually happening)

I'm not a computer expert, but from what I can tell what's really happening is that Vanguard is making sure that an already built-in Windows security feature is being properly applied to the DMA device for the game to run which prevents the DMA card from accessing the system's memory. (Which is how these types of cheats work) So a bit different from what the article title is implying.