I'm sorry, but I have to disagree.Just watched 20 minutes of mens' pro doubles highlights. No volleys from NML. I'm sure unintentionally it happens because sometimes your partner puts up a sitter and you get caught retreating as the opponent hammers it at you. But it's never a position you plan to be in. And certainly no coach has ever told me that was a position to play from.
I googled, and the first match that came up was Djokovic/Fognini v. Kubot/Melo, Indian Wells, 2019. I did not bother watching the Djokovic/Fognini service games, as I assumed they would not serve and volley. I watched one service game each for the other two, who S&V.
Most of the points were either missed returns or easy sitters where the incoming server stopped, bounced it, and pounded it for a winner.
For the approach volleys, though, there was not one time that the incoming server was closer than the service line when he made contact.
Check out, for example, 4:20 and 9:28. And if you care to watch closely for points where the return went into the net, you can see the server would not have been at the service line had the ball gone over.
For rec players, we are not as fast or as tall as these pros, so it is insane to think we can get all the way to the service line if the pros can't. I agree with you that you shouldn't normally park in NML. But you there is no reason to race forward, hair on fire, to get to the service line.
I was taught to play a quality, controlled approach volley from wherever you happen to be while you are on your way in.