If healers were plentiful as a baseline I might agree with you,
they're not, the strike itself might not have that much of an effect but by that logic neither will the gotcha "thanks for the healer queues nerd" people matter. It's also gotten huge amounts of attention from people like you, which is extremely valuable at reaching the developers, the people that very much do matter.
It hasn't started yet and it's been a decisive victory at drawing attention to long running issues.