Great news! I love RHCP, Chad Smith is indeed a prolific drummer and has played with lots of diverse artists down the years, and has worked tirelessly for numerous charities. This can only be a good thing.
This is nothing new. Historically, even in the days of the Smiths the chart placing on the first week would usually be high - then it would fall. Regardless of what anyone says, the album is a success, so stop f***ing whining about it.