It has users but the number of users is dwarfed by the big dogs like VS Code, Visual Studio and IntelliJ Idea - https://survey.stackoverflow.co/2024/technology#most-popular... (using 2024 because 2025 onwards is AI slop).

People are 7x more likely to be using VS Code, which means that a niche tool is far more likely to have a VA Code plugin than an ST plugin.

Other than that, if the 11% of people using it are happy then there’s no issue.