Hey guys,
i was pretty sure that validating nodes give us some kind of security even if they don't mine.
But now i got into a lot of discusssions with these BCH/SV guys and not 100% anymore

How does a full node prevennt double spending, its accepting the longest chain no matter what no ?
What else are they validating. Does a node operator has to do manual auditing of blocks to confirm no double spend happened?
so what is true or wrong about this article from this Faketoshi Craig ?
https://medium.com/@craig_10243/the-myth-of-the-full-validation-node-d7db52748649pls not (only) hate, give me some answers i can learn from to understand it better.
Cheers
