In a sense, you're correct: this is a political position. But hell, so is everything else, including doing nothing, which is a political position in support of the status quo. We have always prohibited malware and bigoted comments, for example, which is a political stance in the same sense. However, I think that we have justified the stance on cryptocurrency pretty well with objectivity rather than opinion, which to my sensibilities is the key distinction between "political" and "non-political" opinions to the layman, in so far as such a distinction can even exist.
But kicking out projects and kicking out people is not the same thing. We will not ban anyone who expresses support for cryptocurrency -- they can host any of their projects which are not cryptocurrency related and participate in the rest of the platform as always.
I would instead say that doing nothing is a political position in support of individual autonomy: users working on cryptocurrency projects if they think that's best, or working against cryptocurrency projects if they think that's best.
It sound like a business decision more than anything, although they do give some ethical rational my guess is that these projects are a legal liability and abusing the platform.
Kicking out projects over that position is kicking people out over a political difference.