Part of the reason may be in your sentence - they are in love with their art just as we are in love with ours. I prefer the "traditional" style, and like bold colors put together simply.
I don't like scrappy quilts. I have made small things with scraps, but not winging it. I need to plan, I need symmetry otherwise I get unnerved. I need lights, mediums, darks, and am particular about color matches. Probably why I stick to small things - runners, pot holders, tote bags, 4x4 or 5x6, larger would send me over the edge...
Many quilts I see I don't understand, others I think that person must be obsessed, others insane, but in good ways. But think about it, look at someone's garden, choice of clothing, decor. I can appreciate the time and effort that goes into a quilt, but I'll stick to the kind I love. They make me happy - it's that simple.