>>24769961 (OP)
homer, dante, some of virgil, beowulf, roland, spenser, milton. canterbury tales and metamorphoses aren't epics, even spenser barely counts.
outside of europe, i've read the two indian epics, the sumerian gilgamesh stories, the lugalbanda/enmerkar cycle and the akkadian sargon fragments.
my thoughts on epic are thoughts on the fundamental nature of literature. they are inextricable, and i think conceiving of epic as just some genre is an absurd modern category error. in a meaningful sense, a "modern epic" is a contradiction in terms, although i think the authors you cite are not ignorant of the issues at play, and probably had interesting angles to pursue.
there are deep truths to be found in the study of epic, both its content and its context, but most readers are not critical enough to actually care about these truths.