I know one instructor at SFTC-he is fantastic. Can't talk about the others as I've not met any of them.
The reason for the dig was because of the amount of incidents the SFTC Liberty's have been in recently. I'm not going to go into all the rumours and innuendo about the school, you will have to make your own decision and I do highly recommend you come across and have a look at various places before you commit to anything.
On a side note, did some flying out of Camden the other day, why do SFTC Liberty aircraft make broadcasts on the CTAF frequency when 6 miles away at 4,500'?