What i see here is that it's not only problem with his script selection this decade, it's also his carelessness..!!
Ra.One, he was more concentrated on making his dream movie and technology, so he didn't cared much about script & story, he had his most focus on technology & VFX.
He agreed for JTHJ without reading script just for yash ji, i read that somewhere.
HNY was like he did it for farah, but it would had worked better without dance stuff, so he should've asked farah to remove dance part and make it a simple revenge heist movie..!!
Dilwale was sorely his mistake, I believe Rohit Shetty is best when it comes to making Big masala potboilers, but SRK forced him to complete it soon enough to release on christman, which fukced entire movie.
Raees was unfortunate incident, with what happened with Dilwale, he & Director had to edit out the controversial & hard hitting part, in addition to tgat they had a Pakistani actress so they didn't wanted things to go bad, so it was panicked decision.
And he said yes to JHMS just after reading 30 minutes of script, that's carelessness, and then whatever nonsense he and his team pulled off with mini trails & marketing & title is known to everyone.
So by that, i think it's not just script sense, but mostly it's carelessness that has affected his movie, sometimes it's not reading script, sometimes forcing director to hurry to sometimes not taking things seriously, so it's his carelessness that is affecting his movies more then anything..!!