The Warriors are now essentially an average FT shooting team.  People fret over FTs because the misses are conspicuous and, late in games, they make a big difference.  However, there's very little correlation between a team's FT% and their record.  There is a much better (though still not great) correlation between how often they get to the line and their record.  Yes, shooting poorly hurts in close games at the end, but much more often, other aspects dictate that games aren't particularly close long before this comes into player.

A FT% of 60% is terrible compared to what other players shoot, but think of it this way:   A 60% FT shooter (considered lousy) will, on average, get 1.2 points when they shoot two at the stripe.  A 55% shooter from the floor (considered quite good, regardless of position) will, on average, return 1.1 points per FG attempt.  The FT shooters who are bad enough that fouling makes sense are very, very rare.   Biedrins is a special case in that his FG% (and rate of return) is higher than his FT% so fouling to prevent a basket (provided it does prevent the basket) may make sense.  I'd rather have him shoot from the floor than from the line.  But most of the time for the vast majority of players, any trip to the line is a good thing.