Frankly, it sounds like you don't fully understand what I'm talking about, the event's history, or how these houses are designed.
Did you go through those houses? It was extremely obvious that HAVOC was a quick-and-dirty, super-cheap reskin of The Spawning. The conversion from Dead Exposure to Spawning was a bit less obvious thanks to the former's emphasis on strobes, but many of the core set pieces still felt awfully familiar, and that familiarity only grew when they were reused again the following year. Despite this, HAVOC was arguably the surprise hit of the year, proving that a "cheap" house can still be great.
With that said, all houses do not use the same or similar layouts, at all. Horror Hotel > Evil Dead Rise is a rare instance where the precise layout will be reused due to the rights issues with Evil Dead Rise. Orlando had to disassemble their Evil Dead Rise maze, so it didn't make sense to build it again. Hollywood's stayed up, so it made economical sense to give it another go. This isn't a big mystery.
Hollywood has had prominent IPs that Orlando has not. Insidious, Crimson Peak, Black Sabbath. Orlando has also had major IPs that Hollywood did not. An American Werewolf in London, The Cabin in the Woods, The Wolfman, Resident Evil. It's not that uncommon at all.
Considering you don't currently attend Hollywood's event, didn't go through Horror Hotel, and have no intention of going through Evil Dead Rise, I'm not sure what all the mudslinging is about.