That's an interesting "reference." That's way more lobbing and overall net clearance...and whole lot less
net pressure than what I'm used to seeing in my little corner of the world. In a recent scrimmage, at least two points of every game had at least 3 players inside the box...even though both our pairs have traditionally been more of a 1-up/1-back style. We've all come to learn that, like Cindy said, the 2-up teams tend to win more and so we're diligently trying to up-the-ante in our own collective games.
But to the OP's original question, I think S&V can work at 3.5 (singles), especially if you think of it as Surprise & Volley. I love to start out a match that way, particularly with opponents I've not played before. Then, as the match settles in and I weigh my success with that tactic, I can/will adjust it. Even if I fall back to a more baseline game, I've at least established that I can
S&V...and they won't know what to expect. I especially love to chip-n-charge, especially on 2nd Serves. They know
I'm coming in...and am often the beneficiary of a DF.
The main key to my success with it isn't so much a powerful serve...but an accurate and consistent 1st Serve as I feel the element of "surprise" is usually lost on a 2nd. Still, I'll throw in a (real) soft one sometimes and follow it in.
End Story: Nothing wrong with Old School. It's tiring, more so than all but the worst baseline battles...but is a whole lot more fun.