Shortly after releasing "Knock Me Down", Anthony Kiedis relapsed, OD'd, and died. A RHCP-obsessed mad scientist in a distant future created a Kiedis Terminator to go back in time and prevent the OD, but the Terminator arrived too late. The Terminator then fell on its backup programming to replace the deceased Kiedis and write songs in his place.
Hillel Slovak was the first to notice, so the Kiedis Terminator had to take care of him. Mother's Milk and Blood Sugar Sex Magik were released successfully, but the Terminator was beginning to break down - note the gibberish in the B-side "Soul to Squeeze." John Frusciante was the next to notice something was wrong, and he barely escaped the band, losing most of his sanity in the process.
The Kiedis Terminator began to realize that it was malfunctioning and pleaded with its creator to bring it back to the future - see Warp; "take me home I need repair" etc. It took the mad scientist a while to refine his design, and the improved Keidis bot could no longer support the long-hair plugin. The blonde Kiedis Terminator ("KT2") was sent to take the place of the original Terminator. While he was completely unaware of the presence of cyborgs in the band, Dave Navarro unfortunately happened to witness the time travel replacement procedure and lost the use of his frontal lobe. See: Dave Navarro in reality TV, Sons of Anarchy, etc.
Successive Kiedis Terminators continue to be replaced as necessary and while stability has increased, so has the mediocrity of their creative output.