Link me to the most user-hostile ECMAScript-based web page you can find, and I'll open up devTools and delete my way out of whatever email-list/login/begware DOM-jail they try to keep me in.

Link me to the most user-hostile Flash-based web page you can find, and I'll watch a ten year old hour-long video presentation from a Gnash developer explaining their 100-year plan to ship a usable open Flash runtime alternative.