It does seem that Diamond might suffer a but of a dilution now that so many people can obtain the status directly, though it wasn't very hard to earn Diamond in the past
via status challenges.
Not exact matches
You can always inquire with Marriott customer service either
via email or by phone to see if you're eligible for a
status challenge to Gold.
Since the
challenges require Elite Qualifying Points, this promotion will not make it any easier to get AA
status via the
challenge.
And if you have elite
status with another airline, they will match it and allow you to earn
status with American quickly
via a special
challenge.