Fair enough, but I don't know that players are jumping forward more than in the past. In game shots are dynamic, and you adjust to get space.
If you are a defender, you are reacting to a shooter, and can generally make sure to defend outside the landing zone. To say the defender did nothing wrong goes against the rules, unless the defender was stationary/not moving into the landing area when the shooter shot. I don't know that I have ever seen a call where a defender was just standing there and was called for a landing space foul, but if it has, and I'd love to see some examples, I'd agree it would be absurd. I don't necessarily disagree, but the times I have seen these calls, they all seem pretty reasonable. I'm sure like any foul, refs have made bad calls, but I am not seeing rampant calls where a shooter is jumping into an occupied zone and getting fts. And I watch a lot of ball.
Like anything, if a player jumps unnaturally, the refs will adjust to that player. I also notice that when a iffy foul is called, the refs tend to make it up on the other end. I would be ok if a particular play was ruled not "reckless" per the rules, that it was just side out and not 3 fts as it really is a foul after the shot, but then you have an issue if the shot goes in. Either part of the shot, or a separate foul.
I actually hate the Harden rule because it isn't enough. If I am standing there, and you throw your arms in my zone, it shouldn't even be a foul. They don't give shots anymore, but gets a team closer to the bonus/ft and can put players into foul trouble. It should be a non-call.