Nope, "me" is fine. "The final decisions have been taken by me", is grammatically correct.
People often use "myself" incorrectly in this context, because they're confused about the distinction between "me" and "I" and think that "myself" gets round it, or even because they think that "myself"...
Tosh. The statement on the website is grammatically correct: "The final decisions have been taken with input from David Burke, Nathan Jones and me"
You can hardly say "The decisions have been taken with input from I", can you?