Unless you did one of the gazillion things that was permissible in 2001 but is now considered insecure and was patched out of all the major browsers. Not sayin

Unless you did one of the gazillion things that was permissible in 2001 but is now considered insecure and was patched out of all the major browsers. Not saying that making browsers more secure is a bad thing but it's definitely not true that every 20 year old web app will work flawlessly on a modern web browser in 2022.