It does certainly seem like this was an erroneous take-down. I'm not familiar with the content, but I can't imagine a more innocuous channel. If JPdylon is out there, the first recommendation is to appeal the decision [1].
Granted that doesn't always work, and it's unfortunate that common next step is to resort to "Support via Hacker News". That being said, content moderation is a super hard problem. It needs to get better and more fair on both sides (i.e. taking down what should be; leaving up what is quality content), but the scale here is often forgotten.
There is far, far too much content posted to manually review. If EEVblog's suggestion was taken and Susan (YouTube CEO) had to manually review every moderation action on channels with 5K+ subs, she would not be able to keep up. If you had a team of people, they would not be able to keep up. Even if you had a fleet of people, the scale is just unreal.
EEVblog's suggestion to diversify platforms is reasonable. The fact that those platforms don't have some of the same problems doesn't necessarily mean that they're better at content moderation, however. They just don't have to operate on the same scale.