Allowing "Voice" internally is a pressure release valve that is also stated inside the company as mentioned, so maybe issues can be fixed.

In a way it is a bit like some democracy in a company rather than the usual authoritarian/dictatorial workplaces we have where usually dissent and opinions against the borg direction is stifled and attacked by the vogons.

Democracy is also a pressure release valve that looks messy but doesn't blow up like authoritarianism does eventually. Better to let the proles, sharecroppers, and feudal peasants have their airing of grievances, fix if you can, if not find ways to route around the issues.