Those 'objective standards' are often vastly patriarchal and colonialist in origin, often seeking to deliberately exclude art that is often in the domain of predominantly women (textiles, particularly textiles from so-called 'primitive cultures'), as well as to exclude the art forms and the visual eye developed in countries not yet colonialised predominantly by white men.

You can value those standards above all others, thus becoming part of and perpetuating that predominantly white, colonialist and patriarchal series of attitudes, but I recommend learning an art history that isn't tied down to white colonialism, like most university curriculums teaching art history actually are. Art is subjective because not all cultures are the same or value the same thing, and to call one culture (particularly a patriarchal white culture) 'right' etc. over others is...well...obviously it's your choice, but you should be aware what you sound like, when you comment on 'objective art standards' in this manner.

It's all well and good to sound like an elitist within the visual arts, just beware of what agendas it sounds like you're serving in the process of that elitism.