I feel like the theory about an advanced ancient civilization makes a lot of sense and explains a lot of things that are often times brushed off as “they were very hard workers” or even straight up denied or hidden from the public, or maybe just a bizzare coincidence that matches up at several different locations around the world at about the same time 🤷♂️
There are some functional differences, which you might want to look up (e.g. redstone isn’t deterministic afaik, so if you use complex redstone you might want to rethink). Also I’ve heard the servers have very poor performance.