Cliffski's not a shovelware guy at all- he does good quality work, though his games are super-niche, which is prob why folks are asking for refunds- they are kinda dry and boring to many people.
I guess the core question here is whether you feel not liking a game is sufficient reason for a refund- because ultimately that's why people get refunds- they feel they didn't get their money's worth (or they're scamming)
We've gone from a situation where nearly all of the risk (on the sale of a game, not the production) was on the consumer, to nearly all of the risk is on the creator.
I do smell a market power inequality that will eventually result in fewer games being made (but this is in a market that is oversupplied)