I agree to some degree......
We used to go to Disney and visit Universal........I think people now will go to Universal and visit Disney (esp after the new park opens)
The hotels are nicer, more amenities, better pools, better perks (esp Express Pass).......
If we ever go back, we will book a week at Hard Rock Universal and do the 3 Universal parks and Volcano bay and then do 2 days at Disney (half day at each of the 4 parks)............
Theres no incentive to staying at WDW hotels but there is at Universal so stay there and visit WDW......especially since you can just buy Genie+ day of.........Why would you ever stay at a Disney hotel again? There is literally no incentive