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.
Firefox already natively supports most of the features you listed.
Which ones? Besides sending a tab from mobile to desktop it doesn’t have tab groups or vertical tabs. Those features rely on extensions and/or custom css.