Stop being idiotic about it. A cast member at Epcot is much more likely to be asked a question about Runaway Railway, Tower of Terror or Galaxy’s Edge than niche experiences. Cast members don’t have to be knowledgeable about everyone facet of the resort but they should know about the main experiences found at each park.
Idiotic is expecting a CM to be knowledgeable about almost everything in the park. Or to even give a good answer. What if the CM hated the new Mickey Shorts version of MM. Should a CM working at Epcot who hates that ride for that reason be able to give me good advice of whether it's worth my time to get in line for it? What are they to say? If I'm a parent with children, should a childless 20-something be able to tell me what attractions are suitable for my children of various ages? What if the CM doesn't like thrill rides and so has never been on ToT? And let's not forget the meme, which has some basis in reality, that CMs are notorious for giving out wrong information, even if they haven't been blocked out.
The presumption is that any are all CMs should be like this online forum with being able to spit out at a moment's notice information about almost everything WDW has to offer. That's idiotic.
CMs I've talked to have been honest about what they have and haven't experienced. I've never run to Guest Relations complaining that a CM didn't know about X. That would be idiotic.
"The CMs must know!" is just a poor rationalization born of disappointment of being blacked out. And that's idiotic.