Here's the crux of the argument for me:
Conventional wisdom says you defend the new meta of pick-heavy perimeter oriented offenses with versatile multi-positional defenders and frequent switching. But when offenses are currently enjoying their
best results in the last 50+ yearsleaguewide I think it's time for conventional wisdom to take a seat and make room for any and all unconventional approaches instead. These current offenses are
designed to exploit zone switching schemes. Golden State's offense came into fashion partially because they drafted two long range snipers but also because ICE defense rook over the NBA and you can't run that defense without helping.
How do you beat an aggressive defense? You get them to beat themselves. When teams like GS set picks they're not trying to free up scorers, they're trying to exploit the half second or so of uncertainty that happens every time you ask a defender to make a choice about who they are going to defend. This is the complete inverse of what used to work in the NBA. Teams running the triangle or the flex offense were trying to create second or third step opportunities by baiting man-to-man defenders out of position. Everything now is point of attack because they know in certain places on the floor a help defender is coming. So you get stagger screens and ghost screens which pull in help defenders and then you pass over or around them and attack the defender who is out of position. If it doesn't work initially, here's 5 more screens in a row, see if you can keep up. Eventually someone misses a rotation and the result is an open basket. All it takes is one weak link in the defense and you're in for a very long night.
I think there's a pretty obvious solution to this problem -- stop switching! There's no rule that says you can't play man-to-man defense anymore. And while the offenses now are specifically designed to exploit zone defenses, the skills which were used in the past to beat man-to-man defenses have atrophied. Let's take Dirk Nowitzki for instance. Sure he would occasionally spot-up at the three point line but the bulk of his offense came with him catching the ball in range for his favorite turn around mid-range jumper and then using his size to create just enough separation to get the shot off. Guards had two jobs... get the ball to your post or midrange scorer in their favorite spot and spot-up at the three point line in case they kick it back out. Someone like AI was a unicorn back in the day, now pretty much every guard needs to attack off the dribble like that because you first need to force the switch to be able to exploit it.
When talking about positional matchups, bigger and faster are almost oxymorons. There are some exceptions like Zion Williamson but for the most part a smaller player is going to be quicker and I don't know that strength is that much of an asset offensively once you venture more than 10 feet from the basket. Is strength going to allow you to power up a jump shot through a weaker defender? Not really. All they need to do is get a hand on the ball and having an extra 8 inches of reach could help there but not any more than getting their feet 8 inches closer would. Until/unless someone shows they can dominate a game with midrange turnaround jumpers and hook shots again I think we should stop caring about length, reach, wingspan, and positional flexibility and start caring about one thing: can you stop dribble penetration on your own
without a help defender? If the answer is yes, you get to be on the team. If the answer is no, we can't use you. If you actually want to field an effective defense in 2021 when even the 7 footers can handle, pass, and shoot, that's the only way to do it in my opinion. Stop helping, stop icing, stop your guy one on one and force them to either hold the ball or pass it in the direction of another defender.