I am not familiar with this library, but if it does what it should then ofcouse is bigger, with react you just get a way to render divs and spans on screen, a GUI framework would give you say a DataGrid component with sort able columns and some advanced optimizations like windowing (aka a grid with 1 million rows will use same resources as a small DataGrid because it will only create enough DOM elements for the visible part and then recycle stuff).
JS devs that did not used Desktop or Mobile GUI tolkits have no idea what is missing in the browser.
JS devs that did not used Desktop or Mobile GUI tolkits have no idea what is missing in the browser.