Beekeeping is and will always be a balance of science and art. I've known hundreds of beekeepers over the years and by far the most sucessful rely on their experience and observation and develope a style of beekeeping that fits them. This isn't to say they ignore science, but every practice does not have to be proven in experiments to be adopted. It may be said that all beekeepers are artists to a certain degree, and like most artist they are opinionated. Or perhaps the art of beekeeping makes us so.
Any one who has kept bees for any length of time will attest to the fact beekeepers are their own worst enemy. The words "beekeeping community" is probably a bit of an oxymoron, since unlike the bees, beekeepers tend to be anything but communal. This often leads to political strife amungst various beekeeping factions.
In the past 5 to 10 years hobby beekeeping has had a huge resurgence in populartily, and with it was born many new groups with many "new" ideas.