There are those of us, myself included that feel very strongly about this issue.
While I respect your opinion, and the fact that you are free to sell, buy or trade with whomever you wish, I don't see supporting slabbing, buying slabbed chips or dealing with anyone who supports this as anything positive for me or this hobby.
In case I should be missing something I would be more than happy to be enlightened.
I also have never met with Mr Garrett, i'm sure that he is an upstanding and honorable person however I feel his position on this issue is not in the best interest of our hobby.