So at this point we don't actually know who owns the coin.
If there is no record of who owns the coin it won't do any good.
And John I'm studying as fast as I can. Looking at both pro and con material. Still trying to figure out the alchemy involved. How you can make something out of nothing is still a mystery.
Yes, bitcoin and crypto addresses do not have a name, they are just a bunch of numbers and letters (but the letters are actually numbers
not denominated in base 10/decimal, go figure

)
There are a lot of videos on YouTube, deaddog
I would suggest to focus your learning on Bitcoin, first, as pretty much all cryptos, Ethereum, Solana, and others, function in a similar way, but those other coins will add more complexities with smart contract which you may not be ready to dig into in the beginning
The bitcoins and cryptos are not created out of nothing, they are mined, so you can search youtube on bitcoin mining to understand that process
You asked about nodes (honest and dishonest) and in a decentralized, distributed bitcoin network, a node is any computer that has a copy of the blockchain and communicate with other nodes to propagate and broadcast transactions on this p2p network, similar to downloading a torrent file
I like this video below if you want to understand the security of storing your wealth in Bitcoin. There are bitcoin addresses out there that hold a large amount of $ value in bitcoin and this is how it's secured