I think the 'dullness' creeps in when some people can only view top chases and hurdles in the context of Festival targets, rather than enjoying them on their own merits, to expand on your theme, Grassy. If one always views these contests as mere sideshows to the big event, then the interest and thrill is held in abeyance, as if they're not quite worthy of full-on enthusiasm.
And if the horses aren't necessarily being aimed at Cheltenham, they're even more viewed as sideshows, which they aren't.
By all means pocket the information these races provide if the horses are going forward to the Festival, but also do remember to enjoy them in the moment, too. Some superb jumping on display today from many horses who won't touch a twig at Chelters, and if one loves the jumps, they're as valid an enjoyment, no matter where or who they are.