No, not boycotts.

The influencial youtubers I think of actually can shape political debate and thus policy - what they say, if it gains enough popularity, sometimes seeps into the political agenda of the ruling party (which is always looking to "score points" with the voters and has its ears to the ground listening which issues and points people are currently responding to). It's basically like being a columnist of an influential newspaper, except you don't need to have the right connections to become one.

The political establishment is savvy enough to score points on things they don't care about and ignore voters on things they do care about. That's why one party supports LGBTQ pride and the other opposes it, but they both support the genocide. LGBTQ pride doesn't really affect politicians' power, genocide does.