It was an interesting read, and I fully understand where the author is coming from, but I think there are a few points that could be added to what he is saying and have lead to the disconnect.
First concerns the idea of stretching deconstruction over essentially 3. Maybe I am stupid, but to me this approach was not obvious. It was not readily apparent that Snyder was deconstructing the characters, and what was intended to stress these points ended up coming across as awkward , nonsensical, or strange. I am not sure exactly where that basic failure occurred, it may have been writing, but likely more had to do with the often choppy editing, and the seeming lack of flow that the movies had. The films presented to us at times seemed to lack the narrative pieces required to tell us what the director's intentions were. So, I can appreciate what Snyder was attempting, but I am not sure the audience was given the tools to reach those conclusions. To that when you create a movie that really pushes ideas and intentionally goes against expectations you are inherently taking a big gamble. It then becomes essential to give people the pieces they need to get it. Defying expectations with a known property requires almost flawless execution. To me it came across as Snyder was being different for the sake of being different, and an over reaching arc or point was not there. This caused me to dislike the approach because the characters presented strayed too far from my expectations.
Pulling off a deconstructed theme over such a long time period requires a lot of faith and patience from the viewer. So stretch this concept over three films and 5 years requires the audience to have retained many finer plot points, and to be emotionally invested in the next film. So you get MoS which was greeted with mixed reviews and reception. So for a portion of the audience, they either did not get what Syder was doing, or did not like it. They failed to acquire the emotional connections needed to want them to see the next step. So those people are already set up to be harder to win over. Then you give them a film that pushes deconstruction further and it drives away those that were on the fence. Those moments that seem like obvious imported plot beats to those who like the directors vision, now become cringe worthy moments for those who don't. We saw the final culmination of this with JL where those people did not come back.
The entire idea of deconstruction seems to be reaching its end in popularity in general. This can be seen in other media, and was not necessarily the case in 2013 for MoS but had started by 2016 for BvS. You see this clearly in comics books where everyone was doing the deconstructed thing in the early 2000's and to an extent people still are today, although it seems to be fading. So many fans reactions are just to say, get along with the damn story. Do not take 6 issues to do a main plot which could be done in 3 issues. I think this tiring of deconstruction can also be seen in some long running TV shows at this point also. The Walking Dead seems to take this long road slow approach at times, leading audiences to dislike "slow" episodes, criticizing that the show does not seem to be moving forward, and declining ratings. While streaming shows doing 8 to 10 episodes seasons are booming in number and popularity. Those shows using shorter seasons are forced to be more concise, and move things along. So the DCEU movies missed the window of deconstruction popularity as a story telling devise.
So maybe this just proves I am exactly the audience the Forbes writer to talking about. Oh, well.