One of the striking differences is how Software Engineering (SWE) has evolved over time. Brook’s use of male-dominated language wasn’t an eyelid-batter during his time, but now, SWE tries to be more inclusive in its language. I’ve even seen content that uses “she” in hypothetical expositions.
I’ve also encountered practices in the workplace that may have been influenced by Mythical Man-Month. Maybe this is due to there being experienced devs who read this book (and its derivations) during their formative years.