If by "not done stuff like that in a long while" you mean "not done it since 2019", then yes, I think you're right.
For the last three years Universal did indeed run a special offer of two nights for the price of one, with a handful of Saturday dates that were excluded. They'd even started selling the ticket for 2020 before the event was cancelled. (It's often the first multi-night ticket that goes on sale before Rush and Frequent)
Here's Orlando Informer's ticket page.
Our insider's guide to Halloween Horror Nights tickets is the definitive guide to this frightful Orlando event. Details, advice, and more.
orlandoinformer.com
While this year's ticket options are still unknown, a buy one get one HAS been offered the past few years. So you might want to dial back on the snark when spouting off on things you may not be entirely informed on.
-Rob