You are operating under the assumption that people who begged you to continue Freeman's Mind into Half-Life 2 are the same people who brought you the bulk of the donation money, which is not necessarily correct. It is entirely possible that all those 0.5M viewers who watched the first episode of FM2 actually brought you about 5-7% of all the money you got.
I, for one, became much more interested in Game Dungeon than in FM pretty much since the 2nd or 3rd episode of the former (despite coming to know you because of the latter). That was what, about 3.5 years ago? FM was at its prime back then. Even
then I already knew that FM is your least favorite project that you started only to fill the gaps between the CP episodes with something easier to make (oh the irony). So when you asked for help, I eagerly supported you because of your GD episodes first and foremost, because compared to FM they felt like something you actually enjoyed to do.
I am sure that I am not alone with these thoughts of mine.
The thing is, I tend to believe that your audience consists of two distinct groups: hundreds of thousands of people who don't care about anything except Freeman's Mind - those are the same kind of audience that most YouTubers have (like PewDiePie); and a very small, but utterly devoted group of people who is interested in
you as a creator, above all else.
These are the people who eagerly watch your Twitch chats, beg you to play multiplayer games with them, who print tokens from old arcade games on a 3D printer for you... And also bring you the vast majority of your donations.
Of course it's your call which group you are going to target. I just thought that after you said about becoming practically independent from YouTube income, you will finally be able to focus on projects that
you wish to do, instead of returning to that monotonous grind that FM is.