This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
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.