Typically they have a dependency on something only one browser can do, and rather than using a polyfill or a better browser, force their bad technical decisions onto the user.
To be fair some things can’t be polyfilled, like the WebUSB API, as someone mentioned in the comments. But lots of the sites could fix their code so it works on Firefox, yeah.
Typically they have a dependency on something only one browser can do, and rather than using a polyfill or a better browser, force their bad technical decisions onto the user.
To be fair some things can’t be polyfilled, like the WebUSB API, as someone mentioned in the comments. But lots of the sites could fix their code so it works on Firefox, yeah.