@Nick86 Since hosts are customers of Airbnb rather than employees, what you're describing is a boycott, rather than a strike. Some activist groups have tried organizing mass boycotts of Airbnb, but mostly it's been guests that they seek to organize - and in these cases, it's certain kinds of hosts they're opposed to. Like those with listings in illegal Israeli settlements, or those associated with housing shortages and overtourism.
But asking people to not spend their money on a product is a much easier thing to do than asking people to sacrifice income for a cause. As often as I've disagreed with some of Airbnb's decisions and practices, I can't say I've ever personally been treated poorly by them - quite the contrary. And I don't see the point in protesting against a service that you're perfectly free to choose not to use.
If there is a specific thing you wish they would do differently, this forum is one place you can amplify your voice. Their social media is another. To their credit, they are more receptive to user feedback than their main competitors.