I know it's not the same to you, but if you look at the top 15 boards on 8chan, that list includes a board that Fredrick likely has no interest in (gay porn), boards full of users that he probably disagrees strongly with (/leftypol/, a left wing version of /pol/, and /christian/, iirc he is an athiest), and a community full of people that he personally cannot stand (/furry/). Maybe you wouldn't pay to provide a home for "gamergate jerks", but he doesn't seem to have a problem providing a home for a lot of people he dislikes or disagrees with.
What is the difference between "enabling" and "not stopping" something? Is he "enabling" GamerGate because he supports it on his personal twitter account, or is he "enabling" it just for refusing to censor it on his site? Is he "enabling" /baphomet/ because he made some improvements to the site software that happened to fix a spam/flooding problem they had? Then is he not also "enabling" the /furry/ board that he developed a CAPTCHA option specifically for, due to the constant attacks of one dedicated spammer that board received? Or does "enabling" just mean "allowing something I dislike"?