I sent an email to mazda complaining about the high start up revs in warmer weather, only to be given reasons for it.
Personally I was brought up to believe that a cold engine should be started and the oil allowed to circulate before revving it, and I still believe that to be true.
The high revs may benefit the emmisions system, but not the engine, most wear takes place while cold, or that was what was wrote back in the day.