Six Flags seems to fix up the surrounding areas of new rides, some times less noticeable than others. 2011 Sky Screamer was added and they added minor landscaping in the area as well as replacing siding and revamped the shatter platter game nearby, 2013 when Boomerang was added, the Primos place had extensive outdoor repairs done that were now visable from the queue. 2014 Tsumani Souker saw French restrooms exterior redone, an office building fixed up, and Outpost concession stand fixed and repainted. 2015 with Justice League they fixed up the Hero's vs Villains gift show, Justice League HQ gift shop, repaint the train bridge and did new landscaping around the train crossing, as well as cleaned up and gave a face lift to the area around Shazam and where the old RC motor boat pool, which is now a flower bed. 2017 Spinsanity got Sound Stage #2 repainted and parts fixed up, as well as landscaping between the ride and the train tracks. And finally 2019 with Supergirl, the Primos next door had additional A/C units installed and exterior repainted, although the repainting might have happened more recently.
I guess what I'm getting at is the park does "touch" other areas and not just what the media will see, but they also seem to take that money and put it towards infrastructure improvements in the areas surrounding the rides instead of super elaborate themes.