No, that's not what happened. Most teams couldn't find a way to stop the Suns, so they had to pick their poison. Jim Jackson and Joe Johnson were among the league leaders in 3-point shooting (both shot over 46% in 2004-05), so obviously they would rather let Richardson shoot. But his 35.8% shooting was still enough to make him a viable option in the regular season. Like Eric said, you're spoiled by the Suns.
By the way, 35.8% was exactly the league average from long range both last season and in 2005-06.
The Suns system is heavily dependent on
accurate three point shooting. IMHO, this is going to become one of the critical stats when looking at teams. Last season the top four teams were:
Phoenix 39.9% (785 of 1965)
Chicago 38.8% (480 of 1237)
Dallas 38.1% (535 of 1304)
San Antonio 38.1% (595 of 1561)
If Marion had not shot any 3pointers, the Suns would have been 705 of 1693 for 41.6%.
BTW, the Jazz had just a 33.5% three point average, which explains why they drafted Almond.