It is not democratic as in "you have a vote to force others to comply to the majority", but more a democratic in "you can try to convince enough people that the major chain becomes how you like it, while the others run a minority fork".
People think "where the money goes, is where the miners go", but the blocksize wars showed that "where the users go, is where the miners go". Miners themselves don't decide on bitcoin rules, users do.
So I personally think that bitcoin is not necessarily democratic, but still highly people/community vs money driven.