There is no doubt that some escorts use SA or other SB sites. But that doesn't mean everyone who uses those sides is one. Some hookers hang out at bars to pick up guys, but to assume that means something about every girl at a bar would be wrong.
We are talking about 99% of girls on SA that want to be labeled as SB and not 'escort ' as it's degrading to them. They do the same thing escorts do - meet strangers on site & fuk them for allowance. There's no SBing here for the most part
Only difference is these girls utilize technology of today to keep things discrete & don't need to do street walking or post ad as in old days to meet guys