My Rosh Yeshiva once told me that this thought is becoming a big problem nowadays. Gedolim used to know when to comment, and when to stay out of politics. That was why we needed to listen to them. They didn’t get involved often, so when they did, it was for a good reason.
Nowadays, the younger generation of Rabbis thinks it’s part of the job of being a Rabbi to get involved in such things. They don’t know enough about the issues to really make judgment calls, but they feel they have to.