It is easier to see the trends of where the top Non-inca scores across several entries on the main table, as opposed to doing an Ad-hoc query which shows only one top entry. I find this more interesting mostly.
I personally see most Inca games as outliers. This is mainly because Inca games are not used for EQM, gauntlets, and few challenge games. I am not sure if Inca games are eligible for QM.
A non-Inca button allows someone like myself to look at the big picture without Inca games, while not changing, altering, or tampering with the "Official HoF Table" that is available for everyone else.
I am by no means trying to resurrect any sort of Inca ban discussion. (I would be opposed to a ban.)
I can only speak for myself. That is why I have asked for others to give their input. If anyone looks at the statistics page, they will see that I am one of the players that is the most active in the HoF. I am asking for a change with something with which I am quite involved, not as a bystander.