Actual survey results are a bit more mixed: https://esc.nccu.edu.tw/PageDoc/Detail?fid=7805&id=6962 Support for moving towards independence has clearly increased a lot since 2018, but many people still haven't made up their minds yet.
That is because formal independence - as used in this survey - means a considerable risk of war with China. It is no surprise that people hesitate going to war when the current status quo is somewhat ok.
If China would allow a referendum in Taiwan (accepting any outcome peacefully), there would be 90%+ majority for independence.