His name is/was JonTron IIRC.
I stop being able to separate the art from the artist when they start using their platform to push their views. Which is what he did. If you are famous and you never mention your ideology then more power to you but when you go on a tirade during an interview about something else you lose that separation.
See also: Michael Richards
I see Dark Reader for Edge but not Firefox. Are they the same extension?