Marriott increased points prices at a ton of hotels in March, only to lower their prices in August with the new program. This gave them a higher baseline from which to claim they’re lowering more redemption prices than they’re raising.
Even accounting for this, the number of hotels going up in price is roughly equal to the number going down in price. But comparing Marriott redemption prices in February to pricing in August is a more reasonable take than ‘reductions outnumber increases’.