Are hypens no longer acceptable?

There is no mention of it in the post. If words (in any language) can be arbitrarily long and columns can be arbitrarily narrow, we will need to solve for this anyway.

Even without those extremes, I feel that there will always be place for the good old hypen when displaying or printing text for the main purpose of readability. No need to max out on perfect "look" in every application of text.

In fact in many places one might even find columns with jagged right edges more readable -- letting you visually distinguish each line from the one above/below it easily by length alone -- and may even lend a certain aesthetic character that is the opposite of mechanical / boring / machine produced / sterile.

Of course not negating the need for a well implemented method without bugs to justify text correctly when the use case demands it.