Starlink is a constellation of low-earth orbit (LEO) satellites, not geostationary satellites. That means that the ground station (i.e. subscriber equipment) talks to one satellite as it comes into view, and over time that satellite moves across the sky, and they switch to another satellite. This means the latency is highly variable as the distance changes, but at its lowest is much lower than a geostationary satellite since it is far closer.
TIOBE is meaningless - it is just search engine result numbers, which for many search engines are likely a wildly inaccurate estimate of how many results match in their index. Many of those matches will not be about the relevant language, and the numbers probably have very little correlation to who uses it (especially for languages that are single letter, include punctuation in the name, or are a common English word).