I tried "remote work" like the initial instructions recommended as an example. The graph it gave me showed large spikes of "neutral" sentiment with a few negligible bouts of negative sentiment and even smaller bouts of positive sentiment. The sample comment it gave was from a "Who Wants to be Hired" post where the poster demanded exclusively remote offers, which the tool classified as "neutral" (with 98.7% confidence!)
Very slick tool, but if the sentiment analysis itself doesn't really work well then I don't see what value this could have.