This is exactly what my AD in Denver has been saying for the past several years.
In 2014 when I bought my Rolex 42mm Polar Explorer II there, they had several cases full of Rolex, including many SS Sport watches such as Submariners (SS and TT), Yachtmasters, GMT II (except for Batman), Explorer I, and Explorer II. They even had white dial Daytonas with steel bezel. In 2015 at the same AD, the Daytona, Batman and Hulk were still the only hard to find Rolex, but they got me a Hulk. Other brands of watches took a back seat to the large number of Rolex displays.
In 2016 (I think) I got on the list for a ceramic Daytona as soon as it was announced, and later the Pepsi GMT II when it was announced, but they never got me one and only called me about a Sea Dweller and Deep Sea Deep Blue a couple of years ago. I declined those, telling the AD that my budget was earmarked for the Daytona and Pepsi GMT. By the end of 2018 their supply of SS watches was dried up, and they had to put a lot more floor space toward other brands. I eventually decided the Daytona wasn't a priority and bought the Pepsi GMT Mk2 used last spring.
Then I got on the list for a 126660 Deep Blue in July 2019, and the assistant manager told me they had not seen one since fall 2018, so he was hoping to have another one by the end of 2019. I still talk to him 1-2x a month asking about the watch, but he has no control over what they get and asks me to be patient [edit - he says I'm the only one waiting for a Deep Blue]. It's now near the end of January 2020 and he's telling me they didn't get a single Deep Blue in 2019, but then he said Rolex opened the factory and they hope to get one in the next couple of months. I could not get more details about the factory, so I wonder if they had shut their main factory down for a while?