I would guess that it is not sinking in because it is not valid.
Let's examine playoff history since 1995.
In 1995, Henry Clay beat Louisville Central and lost to St X.
In 1996, Dunbar beat Fairdale
In 1997, There were no games between Lexington and Louisville teams because the Lexington team lost to Boone County.
In 1998, Tates Creek beat Trinity and lost to Male.
In 1999, Henry Clay beat Ballard and lost to Trinity, Bryan Station beat Eastern, Fern Creek, and Trinity before losing to St X in the finals
In 2000, Bryan Station lost to Eastern, Henry Clay beat Seneca, Eastern before losing to Trinity, and Tates Creek lost to Trinity
In 2001, Tates Creek lost to Trinity
Since 1995, Lexington 4A teams are 2-7 versus the big 3, but are 7-1 against all other Louisville schools. The big 3 are definitely "DOMINANT", as they are against schools from Louisville. There is no evidence whatsoever that the rest of Louisville is dominant. In fact, the evidence for the contrary is easy to see. You can talk all you want about hypothetical games, but the ones I listed are real games played.
The original premise of this thread is flawed. There is no reason to think any team from Lexington should be ranked over any of the big 3 this year. It isn't even close and hasn't been for 3 years.