That's a point, but it depends on your habits. Starnet filtering has only really seemed to be an issue to me on SFO-FRA on LH, and even then in C. I've come to live with the idea that I'll never get a ticket in F on SQ with my UA miles, and though the concept is irritating, there are only a few routes where I personally could rationalize F instead of C.

And Starnet doesn't seem to hit award Y tickets... At the 1K level, redemption in Y is overall very easy thanks to the extra bucket...US has no such benny.