There's a reason why there are tons of rooms with fully naked models using sex toys for free that have no viewers, but rooms with models like Vikki have tons of viewers even though she isn't naked and is boring to watch, and people already knew beforehand that she's boring. But they still watch.
It's not just that she's hot, I think it's that every time she streams people wonder if today's the day they might actually see something interesting. When you never see much it makes you wonder and keeps you a bit interested. Models like her feel 'exclusive' because of that and I think it's why they get whale tippers. So I don't really blame her for not doing much on cam, because she still earns tons of tokens. If you got paid your full salary to go into the office and do nothing, there isn't much incentive to start working really hard and do an amazing job. You're already getting paid for doing the minimum. Shame for us viewers though.