It doesn't seem to be common knowledge (even amongst some FlyerTalkers) that Starwood's "no capacity controls" awards policy only applies to standard rooms. There are a limited number of standard rooms at each property. Once the standard rooms at a property are no longer available, either because the rooms have been sold or claimed with awards, you will be unable to claim an award at that property (unless you pay more points) even if non-standard rooms are available.

Intwrite may be implying that Starwood, or the hotels in the Starwood program, are re-labeling some rooms as "deluxe" or "suites" in order to take them out of the standard category, thus making them unavailable for claiming with an award. I have not seen any evidence of this and don't recall any postings on the Starwood thread about it except with regard to upgrades. It seems clear that some hotels have re-labeled certain suites to avoid having to upgrade elite members to them. This is a dangerous trend, particularly if extended to the pool of standard rooms, but again no evidence as yet.