In the past 10 years we have played Duke 4 times (last in 2021-22 season) and UNC 7 times (last in 2021-22 season).
As many have pointed out, we play Duke next year. UK-Duke and UK-UNC happens on a pretty regular basis.
It's not UK's "slide" it is 1000% about ratings.
Last year 8 of the Top 10 rated NCAA basketball games involved UK (3), Duke (3), or UNC (3).
0 of the Top 10 involved Arkansas, Tennessee or Miami (except Tennesee playing Kentucky and we know Kentucky was the draw there).
So clearly if you are selling advertisements and trying to spread out ratings across as many games as possible, you split the three up and end up with 3 really highly rated games rather than just two.
It's no conspiracy or any shade being thrown at UK, it's just smart business.