Because only an idiot thinks that an encompassing term like safe GFE automatically includes a very specific and predetermined list of services. A smart shopper makes sure the items they are looking for are on the sps list, regardless of the use or lack of use of the GFE. GFE will continue to also refer to the style, to make it different from non-fs, FS only, and PSE. Beyond that, it is up to the consumer to make sure that whatever acronyms he requires is something she does. Safe GFE, after all, may or may not include dfk. It might be lfk or no kissing. Safe GFE may or may not include daty and/or digits. Lack of daty would make you think it cannot be GFE (safe or not), but because she does do cbjs, and she does do dfk, then it is. If you are looking for daty, as a deal breaker, then you are an idiot if you assume the term SafeGFE autmatically assumes it is included.
Look for a list. Most websites have them, most advertisements include them. If they don't most sps will provide with your enquiry. If you cannot be bothered to enquire, then look for an ad or a site that LISTS ALL THE ITEMS you require. It is not rocket science. You would think by this time you would understand how the ads and sites are set up, and they are NOT set up by having a nationwide agreement to determine the definitions of GFE, safeGFE and PSE......