LTT’s video was totally different from what I expected and hoped for based on the thumbnail, you could say clickbait

Both of those videos were so good, actually. Incredible timing that they came out side by side lol

You should be able to submerge any electronic in a pool of distilled water without any effect on the system, as long as the electronics are very clean, and the water is entirely or largely free of contamination of any kind. If I remember correctly, distilled water is dielectric. I believe that they used distilled water as the dielectric fluid for wire EDM back when I was doing tool and die work (like, 20-odd years ago).