With web scraping you typically don’t want the visuals anyway. JS rendered applications are usually easier to scrape because they have data in a more raw or canonical format available somewhere to do that rendering.
Plenty of websites will only render the content fully after some JavaScript runs, so to properly scrape them you do indeed need a browser to process the JS. This includes text content.
Javascript rendered pages load JS which then in turn calls some rest API to get data and use that to render contents. Web scraper stops scraping the html, but calls and scrapes the rest api endpoint.
