An interesting MS article at link below. You still can find the Hyphenation tool using Word's search tool. and use the "?" to get to the article.
In the special character set references an "Optional Hyphen"
With the move toward more digital documents, the use of fixed width pages disappears and the application of hyphenation to break a word at line end becomes more complicated.
Hyphenation is more of a layout tool than a document-content tool.

Keep text together - Microsoft Support