I heartily endorse a boycott of liberal supporters, but not with the idea that it will cause them to change. If the death spiral of the the traditional media hasn’t convinced the Left that liberalism doesn’t sell, they will not BE convinced.
I simply do not like giving my money to my enemy.
All refusing to watch the msm does is to make it cheaper for companies to advertise on the news shows.
Going directly to advertisers is more effective.