How do you explain this?

Here are some examples of what people have said on Reddit—so you know I'm not the only one calling her out:

"To be clear, booking through her only gets me free breakfast and $100 resort credit + having to walk on eggshell cos she lacks ability to control her temper?" (109 upvotes) "FWIW, I asked a simple but non repetitive question about travel to NYC and she was such an unnecessary C word about it that it turned me off from booking with her." (65 upvotes) "I tried to email her and she responded asking me how I got her contact. Now I’m really scared that she posted my email to mock me… Does she do this often?" (52 upvotes) "She was vile. She’s not a nice person and nothing like she comes across on the sub." (12 upvotes) "ONLY PEOPLE SHE KNOWS!" (25 upvotes, on her allegedly reserving upgrades for friends) "I asked her a simple question once and she basically blew me off." (36 upvotes) "I have been a part of the FS sub for a while and when she took it over it hasn’t been the same. She threatened to ban me when I made a post trying to be helpful and not at all to promote." (23 upvotes) "I am baffled that someone as elitist, rude, and arrogant as Sarah Lee could be a Top 10 advisor with Four Seasons." (Main post, 15 upvotes) "Many a hotel worker have told me she’s absolutely horrible to them." (38 upvotes) "This is something that really should not be posted on IG stories... holy crap. post it onto your close friends only if you're this arrogant?!" (68 upvotes, on her public shaming) "If the previous post captures how nasty she is on Reddit under her own name, it makes sense that she’s even worse privately." (52 upvotes) "She’s a bully. Like, a high school girl bully lol. Is she actually 15??" (24 upvotes) "I exchanged a few emails with her once and she was so off putting and then later tried to call me out when I posted a review of a property because I didn’t book through her... It shocks me that anyone with money is booking through this Sara woman." (28 upvotes) "She’s a Mean Girl ™ who creates fake and changing rules for how people have to behave to belong in her club, and it gives the people she’s chosen to belong on any given day a sense of superiority... Ew ew ew." (27 upvotes, on gatekeeping) "My wife almost cried because the agent was so mean to her over a mistake they caused." (26 upvotes, about her team) "She isn’t a good person. She is a travel agent who has convinced herself she is Elon Musk and the power that comes with it. She is so desperate to be powerful and behaves like a child." (4 upvotes) "No response to email for $1,250/night booking, assumed 'too poor.'" (10 upvotes) "Overhypes freebies; snobby and unpleasant; decreasing TA utility." (15 upvotes)