Funny, had to use Zoom recently because of some clients who insisted on using it, and I had to install software (OS X), it didn't work in the browser or I didn't find the switch.
As seen in [0], it just changes the URL. This can be done with the Redirector [1] addon, which is generic and can help with similar problems for other webpages (Twitter -> Nitter; Youtube -> Invidious; www.reddit.com -> old.reddit.com). I wish there was a way to make and see user-made rules.
