Because you've got people going expecting an event like Knotts, HHN, Dark Harbor or Fright Fest... even though it was NEVER once promoted as a full blown haunt event last year. So of course you're not going to hear "glowing reviews". It was the same "Horror Made Here" tour that was introduced the previous year with some extra fluff.
And people really need to lay off the s**t talk in regards to the Neibolt House. It was a FREE attraction WB set up in Hollywood to promote the movie, nothing more nothing less. Just FYI, it was NOT disappointing. It was impressive for what they did in regards to free publicity (hell they spent more to promote Ready Player One in Hollywood this year). Since they already had it, they decided to rebuild it on the backlot for their "Horror" tour. Never once claiming it to be anything different from what people saw in Hollywood.
This year however, WB is going full haunt. And they are advertising it as such complete with scarezones. They even stated they'd be adding things for IT's Neibolt House. Last year must've been successful enough to decide to go "full haunt" this year. Midsummer Scream is coming up at the end of the month & they have a panel on sunday (before HHN)