Also, sorry to invoke the slippery slope argument, but otherwise what's stopping us from devolving all the way back to scriptura continua?
The facts that
1. People once trained generally do not have a problem identifying word boundaries. There are edge cases, but for whatever reason they don't tend to cause problems.
2. People overwhelmingly agree that marking of word boundaries in text is useful.
Neither of those is true for apostrophes. They're hard for people to remember even after being trained, and they add no value.
Gee it's almost like stating an opinion as though it were a fact is free, and anyone can do it, and it means nothing, and so is a pointless waste of time, which says something about the worth of the insights of whoever does it.