For a distributed database there is also fragmentation/sharing though. In this case calling the nodes replicas is not accurate. I guess you would call these “shard” or “dsta” nodes.
You are right about the “slaves” not behaving, in fact they jump on the chance to become the “master” themselves once the current “master” goes down. Then there is the split-brain problem.
It’s really more like a worker boss relationship, but I would hesitate to call database nodes “workers” because this one is usually used for a processing engine like Spark.
Of course their biggest scandal was rushing content and not being diligent with their benchmarks. I honestly never had the impression that they were really the professionals or experts they present themselves to be.
That being said, I think if you view their videos more as entertainment and an entry level content into the IT world for people who otherwise wouldn’t be interested, their content is acceptable.
I wouldn’t watch their videos expecting to learn anything or trusting their expertise/benchmarks, but just for the vibes. Luckily we have real experts like tech jesus to keep them in check. I also think people who actually seek to learn something will eventually figure out LTT ain’t it.