Who was Roger Ebert, and what is this comic about?

The Guardian obituary confirms that Roger Ebert died aged seventy after cancer, having written about films for the Chicago Sun-Times for forty-six years, and notes that operations for thyroid cancer cost him the ability to speak while he remained active. Britannica identifies him as Roger Joseph Ebert (1942–2013), the first film critic to receive the Pulitzer Prize for Criticism in 1975, a long-serving Chicago Sun-Times critic, and co-host whose television work with Gene Siskel popularized film criticism for a mass audience. RogerEbert.com preserves his final public note, A Leave of Presence, in which returning cancer made him reduce duties while he still planned to write. Together the sources show the hinge and the worth: cancer took Ebert’s jaw and voice, but the keyboard became his second mouth, keeping criticism humane, accessible, generous, and alive.

Sources
Page 1 of Roger Ebert: Roger Ebert: Voice After Silence - Roger Ebert is introduced as the film critic who taught millions how to look.
Roger Ebert is introduced as the film critic who taught millions how to look.
Page 2 of Roger Ebert: Roger Ebert: Voice After Silence - The Siskel partnership makes film criticism public, argumentative, funny, and useful.
The Siskel partnership makes film criticism public, argumentative, funny, and useful.
Page 3 of Roger Ebert: Roger Ebert: Voice After Silence - The Pulitzer desk proves that popular movie judgment can become serious literature.
The Pulitzer desk proves that popular movie judgment can become serious literature.
Page 4 of Roger Ebert: Roger Ebert: Voice After Silence - Cancer and surgery take Ebert’s jaw and speaking voice.
Cancer and surgery take Ebert’s jaw and speaking voice.
Page 5 of Roger Ebert: Roger Ebert: Voice After Silence - Typing, blogging, and screens become Ebert’s second voice after silence.
Typing, blogging, and screens become Ebert’s second voice after silence.
Page 6 of Roger Ebert: Roger Ebert: Voice After Silence - Near death, Ebert announces a leave of presence rather than disappearance.
Near death, Ebert announces a leave of presence rather than disappearance.
Page 7 of Roger Ebert: Roger Ebert: Voice After Silence - Ebert’s legacy is attention, empathy, and permission to care deeply about movies.
Ebert’s legacy is attention, empathy, and permission to care deeply about movies.
Roger Ebert Obituary Comic - Roger Ebert: Voice After Silence | Memento Mori Obituary Comics