How a $2M SaaS Lost 20% of Conversions Because Browser Extensions Disabled JavaScript
https://ace-wiki.win/index.php/Why_your_site_screams_%22JavaScript_error%22_the_moment_it_loads_%E2%80%94_and_how_to_stop_panicking
Everyone assumes JavaScript being disabled is rare. In our world it's not a mythical edge case - it's a recurring, quietly damaging problem