who is they?

the people that don't architect their systems for oracle manipulations?

the way people talk around here reminds me of people in the 90s ‘that dun undastand dem puters with their viruses”, interestingly the folly and new problems presented by computers never went away, consumer and developer behavior improved

They are 100% preventable, by using cryptocurrency.

Not sure this is the case in this hack but many of these hacks are related to human error.

Yeah, you can solve this with the Blockchain

The usual way to fix this sort of thing is with a human-in-the-loop retroactive fix process. But that's called "regulation" and "lawsuits", and the cryptocoin crowd trends to not like those.