Of course not. Movie after movie from Hollywood employs non-tonal music to create drama. So I think we have to look deeper to find the oppressive function of tonality. In our times, music as personal expression and as context for community has been almost completely replaced. Its salient functions are instead to manufacture consent, encourage conformity, categorize and maintain people in social status hierarchies, and moreover, to generate profits.
Jazz is an excellent example.
Music schools and the system of employement in orchestras and professional music institutions reveal how music fulfills these purposes. The importance placed on musical skill is used as a way to ensure that musicians continue to serve these oppressive functions. In order to be heard, a musician is required to exhibit the requisite skills prescribed by institutions, which she or he can only acquire by attending music schools and working within the corporate system. Music education ceases to be about self-actualization and communicating experiences and becomes a tool to Deny music to anyone who has not gone through the system. Of course, they may make music on their own, as long as no one hears it.