not allowed to watch porn on Firefox anymore
Firefox: About Your Rights

Mozilla
@hailey the acceptable use policy begins with "You may not use any of Mozilla’s services to:" (which you have cropped out) , and firefox is not considered a "service", so i don't think they ever intended to say that you had to follow those ruels for your personal use of firefox.
Firefox: About Your Rights

Mozilla
@catsalad @hailey but the acceptable use policy is just about "Services"; see https://www.mozilla.org/en-US/about/legal/terms/services/#services does this mean you can't legally use Mozilla VPN to access porn? [or maybe even use firefox sync to keep your password for a porn site???] it sure seems that way (IANAL)? and that sucks. but it still doesn't govern your use of firefox.
Firefox Cloud Services: Terms of Service

Mozilla