It's really not that black and white. If "bosses" had no value they wouldn't exist. Getting a large scale organization to run smoothly with millions of moving pieces is no easy task, and the vast majority of people who attempt to do so fail.
It's not *that* black and white in reality. But a real commitment to democracy demands it.
The great fortunes accumulated by wealthy people rarely start with a genius who had a great idea and turned it into a successful business. Very often it's passed through family lineage. But even ignoring that, it's exceedingly rare that the top brass, the CEO, the President, board members, etc are the most competent workers in the organization. These people got there because they had money to start with. They are able to leverage connections to other wealthy people in their social circle and so on. None of that is crucial to the useful social value of whatever the organization produces, yet they make all the final decisions about what to do with the collectively-produced profits.
Beneath them are middle managers, supervisors, team leaders. Some of these people legitimately are the most skilled people, and some of them are bureaucratic supervisors whose main job is to make sure everyone is working hard. These people often identify more with the owners, but in reality most of them are workers. They are the ones most responsible for "getting a large scale organization to run smoothly with millions of moving pieces".
Practically speaking, we could get rid of the top of this structure and virtually everyone would be better off. There could be a lot more sharing in the profits, with a competent leadership ensuring the smooth functioning of the organization. Also society wouldn't endlessly reproduce an oligarchy with individual power that rivals the state. That would be a move in the right direction.
But that is not a strong commitment to democracy. That is technocratic leadership. Arguably meritocratic, but still authoritarian in structure. A real commitment to democracy means individual workers have a say in how they spend the majority of their waking hours. At minimum it means elected leadership, but even better would be self-governance: democratic administration of the workplace.
Right now, it can be argued that individual workers don't have the training or perspective necessary to make informed decisions about the administration of the workplace. But we shouldn't accept this for all time. We need to extend high quality, progressive education to all people. People should not simply be trained in a core specialization. A real education trains you to participate in society. In a liberal democracy, we expect people to have an understanding of civics to participate in the political process, and the same should be true of the workplace.
Albert Einstein emphasizes an expanded social role of education in his essay "Why Socialism":
... under existing conditions, private capitalists inevitably control, directly or indirectly, the main sources of information (press, radio, education). It is thus extremely difficult, and indeed in most cases quite impossible, for the individual citizen to come to objective conclusions and to make intelligent use of his political rights.
The profit motive, in conjunction with competition among capitalists, is responsible for an instability in the accumulation and utilization of capital which leads to increasingly severe depressions. Unlimited competition leads to a huge waste of labor, and to that crippling of the social consciousness of individuals which I mentioned before.
This crippling of individuals I consider the worst evil of capitalism. Our whole educational system suffers from this evil. An exaggerated competitive attitude is inculcated into the student, who is trained to worship acquisitive success as a preparation for his future career.
I am convinced there is only one way to eliminate these grave evils, namely through the establishment of a socialist economy, accompanied by an educational system which would be oriented toward social goals. In such an economy, the means of production are owned by society itself and are utilized in a planned fashion. A planned economy, which adjusts production to the needs of the community, would distribute the work to be done among all those able to work and would guarantee a livelihood to every man, woman, and child. The education of the individual, in addition to promoting his own innate abilities, would attempt to develop in him a sense of responsibility for his fellow men in place of the glorification of power and success in our present society.